99708872 has 8 divisors (see below), whose sum is σ = 186954150. Its totient is φ = 49854432.

The previous prime is 99708871. The next prime is 99708877. The reversal of 99708872 is 27880799.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 90136036 + 9572836 = 9494^2 + 3094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 99708872.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6231797 + ... + 6231812.

Almost surely, 2^99708872 is an apocalyptic number.

It is an amenable number.

99708872 is a deficient number, since it is larger than the sum of its proper divisors (87245278).

99708872 is a wasteful number, since it uses less digits than its factorization.

99708872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12463615 (or 12463611 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 99708872 is about 9985.4329901111. The cubic root of 99708872 is about 463.7080133836.

The spelling of 99708872 in words is "ninety-nine million, seven hundred eight thousand, eight hundred seventy-two".