99940520 has 32 divisors (see below), whose sum is σ = 234645120. Its totient is φ = 38237760.

The previous prime is 99940517. The next prime is 99940537. The reversal of 99940520 is 2504999.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53396 + ... + 55235.

It is an arithmetic number, because the mean of its divisors is an integer number (7332660).

Almost surely, 2^99940520 is an apocalyptic number.

It is an amenable number.

99940520 is an abundant number, since it is smaller than the sum of its proper divisors (134704600).

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

99940520 is a wasteful number, since it uses less digits than its factorization.

99940520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108665 (or 108661 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 99940520 is about 9997.0255576346. The cubic root of 99940520 is about 464.0668378747.

The spelling of 99940520 in words is "ninety-nine million, nine hundred forty thousand, five hundred twenty".