899431967 has 16 divisors (see below), whose sum is σ = 1040615424. Its totient is φ = 761460000.

The previous prime is 899431933. The next prime is 899431979. The reversal of 899431967 is 769134998.

It is not a de Polignac number, because 899431967 - 2⁸ = 899431711 is a prime.

It is a super-2 number, since 2×899431967² = 1617955726522978178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (899430967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345842 + ... + 348432.

It is an arithmetic number, because the mean of its divisors is an integer number (65038464).

Almost surely, 2^899431967 is an apocalyptic number.

899431967 is a deficient number, since it is larger than the sum of its proper divisors (141183457).

899431967 is a wasteful number, since it uses less digits than its factorization.

899431967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190.

The product of its digits is 2939328, while the sum is 56.

The square root of 899431967 is about 29990.5312890586. The cubic root of 899431967 is about 965.2862196974.

The spelling of 899431967 in words is "eight hundred ninety-nine million, four hundred thirty-one thousand, nine hundred sixty-seven".