99679811 has 16 divisors (see below), whose sum is σ = 126033408. Its totient is φ = 76574400.

The previous prime is 99679759. The next prime is 99679831. The reversal of 99679811 is 11897699.

It is not a de Polignac number, because 99679811 - 2⁶ = 99679747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99679811.

It is not an unprimeable number, because it can be changed into a prime (99679831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3650 + ... + 14583.

It is an arithmetic number, because the mean of its divisors is an integer number (7877088).

Almost surely, 2^99679811 is an apocalyptic number.

99679811 is a deficient number, since it is larger than the sum of its proper divisors (26353597).

99679811 is a wasteful number, since it uses less digits than its factorization.

99679811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18322.

The product of its digits is 244944, while the sum is 50.

The square root of 99679811 is about 9983.9777143181. The cubic root of 99679811 is about 463.6629584560.

The spelling of 99679811 in words is "ninety-nine million, six hundred seventy-nine thousand, eight hundred eleven".