99979285 has 8 divisors (see below), whose sum is σ = 137114496. Its totient is φ = 68557200.

The previous prime is 99979249. The next prime is 99979303. The reversal of 99979285 is 58297999.

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

It is not a de Polignac number, because 99979285 - 2⁷ = 99979157 is a prime.

It is a super-2 number, since 2×99979285² = 19991714858222450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428241 + ... + 1428310.

It is an arithmetic number, because the mean of its divisors is an integer number (17139312).

Almost surely, 2^99979285 is an apocalyptic number.

It is an amenable number.

99979285 is a deficient number, since it is larger than the sum of its proper divisors (37135211).

99979285 is a wasteful number, since it uses less digits than its factorization.

99979285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856563.

The product of its digits is 3674160, while the sum is 58.

The square root of 99979285 is about 9998.9641963555. The cubic root of 99979285 is about 464.1268309771.

The spelling of 99979285 in words is "ninety-nine million, nine hundred seventy-nine thousand, two hundred eighty-five".