99891916 has 6 divisors (see below), whose sum is σ = 174810860. Its totient is φ = 49945956.

The previous prime is 99891901. The next prime is 99891917. The reversal of 99891916 is 61919899.

It is not an unprimeable number, because it can be changed into a prime (99891917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12486486 + ... + 12486493.

Almost surely, 2^99891916 is an apocalyptic number.

It is an amenable number.

99891916 is a deficient number, since it is larger than the sum of its proper divisors (74918944).

99891916 is a wasteful number, since it uses less digits than its factorization.

99891916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24972983 (or 24972981 counting only the distinct ones).

The product of its digits is 314928, while the sum is 52.

The square root of 99891916 is about 9994.5943389414. The cubic root of 99891916 is about 463.9915959140.

The spelling of 99891916 in words is "ninety-nine million, eight hundred ninety-one thousand, nine hundred sixteen".