426133989 has 6 divisors (see below), whose sum is σ = 615526886. Its totient is φ = 284089320.

The previous prime is 426133987. The next prime is 426133993. The reversal of 426133989 is 989331624.

It is a happy number.

426133989 is a `hidden beast` number, since 426 + 133 + 98 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 424772100 + 1361889 = 20610^2 + 1167^2 .

It is not a de Polignac number, because 426133989 - 2¹ = 426133987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426133987) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23674102 + ... + 23674119.

Almost surely, 2^426133989 is an apocalyptic number.

It is an amenable number.

426133989 is a deficient number, since it is larger than the sum of its proper divisors (189392897).

426133989 is a wasteful number, since it uses less digits than its factorization.

426133989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47348227 (or 47348224 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 426133989 is about 20643.0130794901. The cubic root of 426133989 is about 752.5153995885.

The spelling of 426133989 in words is "four hundred twenty-six million, one hundred thirty-three thousand, nine hundred eighty-nine".