99831272 has 8 divisors (see below), whose sum is σ = 187183650. Its totient is φ = 49915632.

The previous prime is 99831257. The next prime is 99831283. The reversal of 99831272 is 27213899.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 94750756 + 5080516 = 9734^2 + 2254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6239447 + ... + 6239462.

Almost surely, 2^99831272 is an apocalyptic number.

It is an amenable number.

99831272 is a deficient number, since it is larger than the sum of its proper divisors (87352378).

99831272 is a wasteful number, since it uses less digits than its factorization.

99831272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12478915 (or 12478911 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 99831272 is about 9991.5600383524. The cubic root of 99831272 is about 463.8976810654.

The spelling of 99831272 in words is "ninety-nine million, eight hundred thirty-one thousand, two hundred seventy-two".