99891356 has 12 divisors (see below), whose sum is σ = 178529568. Its totient is φ = 48882912.

The previous prime is 99891329. The next prime is 99891361. The reversal of 99891356 is 65319899.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265481 + ... + 265856.

It is an arithmetic number, because the mean of its divisors is an integer number (14877464).

Almost surely, 2^99891356 is an apocalyptic number.

It is an amenable number.

99891356 is a deficient number, since it is larger than the sum of its proper divisors (78638212).

99891356 is a wasteful number, since it uses less digits than its factorization.

99891356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531388 (or 531386 counting only the distinct ones).

The product of its digits is 524880, while the sum is 50.

The square root of 99891356 is about 9994.5663237581. The cubic root of 99891356 is about 463.9907288576.

The spelling of 99891356 in words is "ninety-nine million, eight hundred ninety-one thousand, three hundred fifty-six".