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99404631 = 33311131051
BaseRepresentation
bin1011110110011…
…00101101010111
320221001021112000
411323030231113
5200421422011
613510330343
72314632264
oct573145527
9227037460
1099404631
1151125197
12293599b3
1317795811
14d2b826b
158ad8356
hex5eccb57

99404631 has 32 divisors (see below), whose sum is σ = 153507840. Its totient is φ = 63504000.

The previous prime is 99404629. The next prime is 99404633. The reversal of 99404631 is 13640499.

It is an interprime number because it is at equal distance from previous prime (99404629) and next prime (99404633).

It is not a de Polignac number, because 99404631 - 21 = 99404629 is a prime.

It is a super-2 number, since 2×994046312 = 19762561328492322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99404633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94056 + ... + 95106.

It is an arithmetic number, because the mean of its divisors is an integer number (4797120).

Almost surely, 299404631 is an apocalyptic number.

99404631 is the 6306-th heptagonal number.

99404631 is a deficient number, since it is larger than the sum of its proper divisors (54103209).

99404631 is a wasteful number, since it uses less digits than its factorization.

99404631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 99404631 is about 9970.1871095782. The cubic root of 99404631 is about 463.2358965040.

The spelling of 99404631 in words is "ninety-nine million, four hundred four thousand, six hundred thirty-one".

Divisors: 1 3 9 27 31 93 113 279 339 837 1017 1051 3051 3153 3503 9459 10509 28377 31527 32581 94581 97743 118763 293229 356289 879687 1068867 3206601 3681653 11044959 33134877 99404631