442624090 has 12 divisors (see below), whose sum is σ = 796843134. Its totient is φ = 177023024.

The previous prime is 442624067. The next prime is 442624093. The reversal of 442624090 is 90426244.

It can be written as a sum of positive squares in 3 ways, for example, as 93644329 + 348979761 = 9677^2 + 18681^2 .

It is not an unprimeable number, because it can be changed into a prime (442624093) 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, 63204 + ... + 69856.

Almost surely, 2^442624090 is an apocalyptic number.

442624090 is a deficient number, since it is larger than the sum of its proper divisors (354219044).

442624090 is an frugal number, since it uses more digits than its factorization.

442624090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13313 (or 6660 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 442624090 is about 21038.6332731002. The cubic root of 442624090 is about 762.0995098331.

The spelling of 442624090 in words is "four hundred forty-two million, six hundred twenty-four thousand, ninety".