99491672 has 16 divisors (see below), whose sum is σ = 213196560. Its totient is φ = 42639264.

The previous prime is 99491659. The next prime is 99491687. The reversal of 99491672 is 27619499.

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, 888263 + ... + 888374.

It is an arithmetic number, because the mean of its divisors is an integer number (13324785).

Almost surely, 2^99491672 is an apocalyptic number.

It is an amenable number.

99491672 is an abundant number, since it is smaller than the sum of its proper divisors (113704888).

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

99491672 is a wasteful number, since it uses less digits than its factorization.

99491672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776650 (or 1776646 counting only the distinct ones).

The product of its digits is 244944, while the sum is 47.

The square root of 99491672 is about 9974.5512179747. The cubic root of 99491672 is about 463.3710637574.

The spelling of 99491672 in words is "ninety-nine million, four hundred ninety-one thousand, six hundred seventy-two".