99979926 has 8 divisors (see below), whose sum is σ = 199959864. Its totient is φ = 33326640.

The previous prime is 99979903. The next prime is 99979927. The reversal of 99979926 is 62997999.

It is a sphenic number, since it is the product of 3 distinct primes.

99979926 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 99979926.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99979927) 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, 8331655 + ... + 8331666.

It is an arithmetic number, because the mean of its divisors is an integer number (24994983).

Almost surely, 2^99979926 is an apocalyptic number.

99979926 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

99979926 is a wasteful number, since it uses less digits than its factorization.

99979926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16663326.

The product of its digits is 4960116, while the sum is 60.

The square root of 99979926 is about 9998.9962496243. The cubic root of 99979926 is about 464.1278228647.

The spelling of 99979926 in words is "ninety-nine million, nine hundred seventy-nine thousand, nine hundred twenty-six".