442234637 has 6 divisors (see below), whose sum is σ = 478869642. Its totient is φ = 408216432.

The previous prime is 442234631. The next prime is 442234649. The reversal of 442234637 is 736432244.

It can be written as a sum of positive squares in 3 ways, for example, as 49758916 + 392475721 = 7054^2 + 19811^2 .

It is not a de Polignac number, because 442234637 - 2⁸ = 442234381 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442234597 and 442234606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442234631) 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, 1308218 + ... + 1308555.

It is an arithmetic number, because the mean of its divisors is an integer number (79811607).

Almost surely, 2^442234637 is an apocalyptic number.

It is an amenable number.

442234637 is a deficient number, since it is larger than the sum of its proper divisors (36635005).

442234637 is a wasteful number, since it uses less digits than its factorization.

442234637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616799 (or 2616786 counting only the distinct ones).

The product of its digits is 96768, while the sum is 35.

The square root of 442234637 is about 21029.3755732309. The cubic root of 442234637 is about 761.8759273101.

The spelling of 442234637 in words is "four hundred forty-two million, two hundred thirty-four thousand, six hundred thirty-seven".