99799131 has 8 divisors (see below), whose sum is σ = 133115904. Its totient is φ = 66507560.

The previous prime is 99799127. The next prime is 99799151. The reversal of 99799131 is 13199799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99799131 - 2² = 99799127 is a prime.

It is a super-2 number, since 2×99799131² = 19919733096710322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99799151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6886 + ... + 15716.

It is an arithmetic number, because the mean of its divisors is an integer number (16639488).

Almost surely, 2^99799131 is an apocalyptic number.

99799131 is a deficient number, since it is larger than the sum of its proper divisors (33316773).

99799131 is a wasteful number, since it uses less digits than its factorization.

99799131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12601.

The product of its digits is 137781, while the sum is 48.

The square root of 99799131 is about 9989.9515013838. The cubic root of 99799131 is about 463.8478912702.

It can be divided in two parts, 9979 and 9131, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 99799131 in words is "ninety-nine million, seven hundred ninety-nine thousand, one hundred thirty-one".