99405131 has 8 divisors (see below), whose sum is σ = 119585280. Its totient is φ = 80719848.

The previous prime is 99405101. The next prime is 99405133. The reversal of 99405131 is 13150499.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99405131 is a prime.

It is a super-2 number, since 2×99405131² = 19762760138254322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99405133) 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, 373571 + ... + 373836.

It is an arithmetic number, because the mean of its divisors is an integer number (14948160).

Almost surely, 2^99405131 is an apocalyptic number.

99405131 is a deficient number, since it is larger than the sum of its proper divisors (20180149).

99405131 is a wasteful number, since it uses less digits than its factorization.

99405131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747433.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 99405131 is about 9970.2121843018. The cubic root of 99405131 is about 463.2366731866.

The spelling of 99405131 in words is "ninety-nine million, four hundred five thousand, one hundred thirty-one".