99945916 has 24 divisors (see below), whose sum is σ = 203666400. Its totient is φ = 42025152.

The previous prime is 99945913. The next prime is 99945929. The reversal of 99945916 is 61954999.

It is a super-2 number, since 2×99945916² = 19978372250158112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99945913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32191 + ... + 35158.

It is an arithmetic number, because the mean of its divisors is an integer number (8486100).

Almost surely, 2^99945916 is an apocalyptic number.

It is an amenable number.

99945916 is an abundant number, since it is smaller than the sum of its proper divisors (103720484).

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

99945916 is a wasteful number, since it uses less digits than its factorization.

99945916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67413 (or 67411 counting only the distinct ones).

The product of its digits is 787320, while the sum is 52.

The square root of 99945916 is about 9997.2954342662. The cubic root of 99945916 is about 464.0751897077.

The spelling of 99945916 in words is "ninety-nine million, nine hundred forty-five thousand, nine hundred sixteen".