99404031 has 8 divisors (see below), whose sum is σ = 133011504. Its totient is φ = 66032960.

The previous prime is 99404023. The next prime is 99404051. The reversal of 99404031 is 13040499.

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 99404031 - 2³ = 99404023 is a prime.

It is a super-2 number, since 2×99404031² = 19762322758097922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99404031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99404021) 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, 58116 + ... + 59801.

It is an arithmetic number, because the mean of its divisors is an integer number (16626438).

Almost surely, 2^99404031 is an apocalyptic number.

99404031 is a deficient number, since it is larger than the sum of its proper divisors (33607473).

99404031 is a wasteful number, since it uses less digits than its factorization.

99404031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118201.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 99404031 is about 9970.1570198267. The cubic root of 99404031 is about 463.2349644813.

The spelling of 99404031 in words is "ninety-nine million, four hundred four thousand, thirty-one".