99456731 has 4 divisors (see below), whose sum is σ = 108498264. Its totient is φ = 90415200.

The previous prime is 99456727. The next prime is 99456737. The reversal of 99456731 is 13765499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13765499 = 11 ⋅1251409.

It is a cyclic number.

It is not a de Polignac number, because 99456731 - 2² = 99456727 is a prime.

It is a super-2 number, since 2×99456731² = 19783282682412722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99456737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4520750 + ... + 4520771.

It is an arithmetic number, because the mean of its divisors is an integer number (27124566).

Almost surely, 2^99456731 is an apocalyptic number.

99456731 is a deficient number, since it is larger than the sum of its proper divisors (9041533).

99456731 is a wasteful number, since it uses less digits than its factorization.

99456731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9041532.

The product of its digits is 204120, while the sum is 44.

The square root of 99456731 is about 9972.7995567945. The cubic root of 99456731 is about 463.3168128379.

The spelling of 99456731 in words is "ninety-nine million, four hundred fifty-six thousand, seven hundred thirty-one".