426987831 has 8 divisors (see below), whose sum is σ = 587682304. Its totient is φ = 275475960.

The previous prime is 426987787. The next prime is 426987857. The reversal of 426987831 is 138789624.

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

It is not a de Polignac number, because 426987831 - 2²⁷ = 292770103 is a prime.

It is a super-2 number, since 2×426987831² = 364637215644169122, 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 (426987331) 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, 2295541 + ... + 2295726.

It is an arithmetic number, because the mean of its divisors is an integer number (73460288).

Almost surely, 2^426987831 is an apocalyptic number.

426987831 is a deficient number, since it is larger than the sum of its proper divisors (160694473).

426987831 is a wasteful number, since it uses less digits than its factorization.

426987831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591301.

The product of its digits is 580608, while the sum is 48.

The square root of 426987831 is about 20663.6838680812. The cubic root of 426987831 is about 753.0176677353.

The spelling of 426987831 in words is "four hundred twenty-six million, nine hundred eighty-seven thousand, eight hundred thirty-one".