426897531 has 6 divisors (see below), whose sum is σ = 616629780. Its totient is φ = 284598348.

The previous prime is 426897517. The next prime is 426897587. The reversal of 426897531 is 135798624.

426897531 is a `hidden beast` number, since 4 + 26 + 8 + 97 + 531 = 666.

It is not a de Polignac number, because 426897531 - 2⁶ = 426897467 is a prime.

It is a super-3 number, since 3×426897531³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (426897131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23716521 + ... + 23716538.

It is an arithmetic number, because the mean of its divisors is an integer number (102771630).

Almost surely, 2^426897531 is an apocalyptic number.

426897531 is a deficient number, since it is larger than the sum of its proper divisors (189732249).

426897531 is a wasteful number, since it uses less digits than its factorization.

426897531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47433065 (or 47433062 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 426897531 is about 20661.4987597706. The cubic root of 426897531 is about 752.9645809068.

The spelling of 426897531 in words is "four hundred twenty-six million, eight hundred ninety-seven thousand, five hundred thirty-one".