99679518 has 32 divisors (see below), whose sum is σ = 224824320. Its totient is φ = 32729400.

The previous prime is 99679511. The next prime is 99679561. The reversal of 99679518 is 81597699.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99679511) 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 15 ways as a sum of consecutive naturals, for example, 10158 + ... + 17393.

It is an arithmetic number, because the mean of its divisors is an integer number (7025760).

Almost surely, 2^99679518 is an apocalyptic number.

99679518 is an abundant number, since it is smaller than the sum of its proper divisors (125144802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99679518 is a wasteful number, since it uses less digits than its factorization.

99679518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27629 (or 27623 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The square root of 99679518 is about 9983.9630407970. The cubic root of 99679518 is about 463.6625041568.

The spelling of 99679518 in words is "ninety-nine million, six hundred seventy-nine thousand, five hundred eighteen".