426477987 has 32 divisors (see below), whose sum is σ = 688665600. Its totient is φ = 259268256.

The previous prime is 426477959. The next prime is 426477991. The reversal of 426477987 is 789774624.

It is not a de Polignac number, because 426477987 - 2¹¹ = 426475939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (426477917) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21814 + ... + 36452.

It is an arithmetic number, because the mean of its divisors is an integer number (21520800).

Almost surely, 2^426477987 is an apocalyptic number.

426477987 is a deficient number, since it is larger than the sum of its proper divisors (262187613).

426477987 is a wasteful number, since it uses less digits than its factorization.

426477987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14744 (or 14738 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 426477987 is about 20651.3434671936. The cubic root of 426477987 is about 752.7178352653.

The spelling of 426477987 in words is "four hundred twenty-six million, four hundred seventy-seven thousand, nine hundred eighty-seven".