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99708861 = 3721792
BaseRepresentation
bin1011111000101…
…10111110111101
320221121201211210
411330112332331
5201011140421
613521035033
72320340250
oct574267675
9227551753
1099708861
115131281a
1229485a79
1317871135
14d357097
158b48576
hex5f16fbd

99708861 has 12 divisors (see below), whose sum is σ = 152007072. Its totient is φ = 56950344.

The previous prime is 99708839. The next prime is 99708871. The reversal of 99708861 is 16880799.

It is a happy number.

It is not a de Polignac number, because 99708861 - 210 = 99707837 is a prime.

It is a Smith number, since the sum of its digits (48) 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 99708861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99708871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44670 + ... + 46848.

It is an arithmetic number, because the mean of its divisors is an integer number (12667256).

Almost surely, 299708861 is an apocalyptic number.

It is an amenable number.

99708861 is a deficient number, since it is larger than the sum of its proper divisors (52298211).

99708861 is an frugal number, since it uses more digits than its factorization.

99708861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368 (or 2189 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 99708861 is about 9985.4324393088. The cubic root of 99708861 is about 463.7079963313.

The spelling of 99708861 in words is "ninety-nine million, seven hundred eight thousand, eight hundred sixty-one".

Divisors: 1 3 7 21 2179 6537 15253 45759 4748041 14244123 33236287 99708861