899242631 has 8 divisors (see below), whose sum is σ = 1028641440. Its totient is φ = 770077728.

The previous prime is 899242613. The next prime is 899242651. The reversal of 899242631 is 136242998.

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

It is a de Polignac number, because none of the positive numbers 2^k-899242631 is a prime.

It is a super-2 number, since 2×899242631² = 1617274618815604322, 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 (899242651) 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, 50156 + ... + 65681.

It is an arithmetic number, because the mean of its divisors is an integer number (128580180).

Almost surely, 2^899242631 is an apocalyptic number.

899242631 is a deficient number, since it is larger than the sum of its proper divisors (129398809).

899242631 is a wasteful number, since it uses less digits than its factorization.

899242631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116953.

The product of its digits is 186624, while the sum is 44.

The square root of 899242631 is about 29987.3745266237. The cubic root of 899242631 is about 965.2184820348.

The spelling of 899242631 in words is "eight hundred ninety-nine million, two hundred forty-two thousand, six hundred thirty-one".