99540816 has 40 divisors (see below), whose sum is σ = 259563744. Its totient is φ = 32868480.

The previous prime is 99540809. The next prime is 99540817. The reversal of 99540816 is 61804599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99540817) 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 7 ways as a sum of consecutive naturals, for example, 4555 + ... + 14826.

Almost surely, 2^99540816 is an apocalyptic number.

It is an amenable number.

99540816 is an abundant number, since it is smaller than the sum of its proper divisors (160022928).

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

99540816 is a wasteful number, since it uses less digits than its factorization.

99540816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19499 (or 19493 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 99540816 is about 9977.0143830707. The cubic root of 99540816 is about 463.4473453822.

The spelling of 99540816 in words is "ninety-nine million, five hundred forty thousand, eight hundred sixteen".