442577631 has 8 divisors (see below), whose sum is σ = 599777584. Its totient is φ = 290214720.

The previous prime is 442577617. The next prime is 442577651. The reversal of 442577631 is 136775244.

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

It is not a de Polignac number, because 442577631 - 2⁵ = 442577599 is a prime.

It is a super-2 number, since 2×442577631² = 391749918923144322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442577631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442577651) 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, 1209046 + ... + 1209411.

It is an arithmetic number, because the mean of its divisors is an integer number (74972198).

Almost surely, 2^442577631 is an apocalyptic number.

442577631 is a deficient number, since it is larger than the sum of its proper divisors (157199953).

442577631 is a wasteful number, since it uses less digits than its factorization.

442577631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418521.

The product of its digits is 141120, while the sum is 39.

The square root of 442577631 is about 21037.5291087143. The cubic root of 442577631 is about 762.0728449040.

The spelling of 442577631 in words is "four hundred forty-two million, five hundred seventy-seven thousand, six hundred thirty-one".