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99997904 = 249776397
BaseRepresentation
bin1011111010111…
…01100011010000
320222011102100002
411331131203100
5201044413104
613531145132
72322653036
oct575354320
9228142302
1099997904
115149a9a6
12295a51a8
1317942876
14d3d0556
158ba401e
hex5f5d8d0

99997904 has 20 divisors (see below), whose sum is σ = 193974564. Its totient is φ = 49939968.

The previous prime is 99997901. The next prime is 99997907. The reversal of 99997904 is 40979999.

It is an interprime number because it is at equal distance from previous prime (99997901) and next prime (99997907).

It can be written as a sum of positive squares in 2 ways, for example, as 41628304 + 58369600 = 6452^2 + 7640^2 .

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 99997904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99997901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12434 + ... + 18830.

Almost surely, 299997904 is an apocalyptic number.

It is an amenable number.

99997904 is a deficient number, since it is larger than the sum of its proper divisors (93976660).

99997904 is a wasteful number, since it uses less digits than its factorization.

99997904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382 (or 7376 counting only the distinct ones).

The product of its (nonzero) digits is 1653372, while the sum is 56.

The square root of 99997904 is about 9999.8951994508. The cubic root of 99997904 is about 464.1556404152.

The spelling of 99997904 in words is "ninety-nine million, nine hundred ninety-seven thousand, nine hundred four".

Divisors: 1 2 4 8 16 977 1954 3908 6397 7816 12794 15632 25588 51176 102352 6249869 12499738 24999476 49998952 99997904