442604431 has 8 divisors (see below), whose sum is σ = 453255264. Its totient is φ = 432038880.

The previous prime is 442604413. The next prime is 442604443. The reversal of 442604431 is 134406244.

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

It is a cyclic number.

It is not a de Polignac number, because 442604431 - 2⁷ = 442604303 is a prime.

It is a super-2 number, since 2×442604431² = 391797364681667522, 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 442604431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442604831) 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, 10755 + ... + 31636.

It is an arithmetic number, because the mean of its divisors is an integer number (56656908).

Almost surely, 2^442604431 is an apocalyptic number.

442604431 is a deficient number, since it is larger than the sum of its proper divisors (10650833).

442604431 is a wasteful number, since it uses less digits than its factorization.

442604431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42641.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 442604431 is about 21038.1660560040. The cubic root of 442604431 is about 762.0882268683.

The spelling of 442604431 in words is "four hundred forty-two million, six hundred four thousand, four hundred thirty-one".