442236939 has 16 divisors (see below), whose sum is σ = 615831552. Its totient is φ = 281756288.

The previous prime is 442236931. The next prime is 442236941. The reversal of 442236939 is 939632244.

It is a cyclic number.

It is not a de Polignac number, because 442236939 - 2³ = 442236931 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 442236939.

It is not an unprimeable number, because it can be changed into a prime (442236931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105094 + ... + 109220.

It is an arithmetic number, because the mean of its divisors is an integer number (38489472).

Almost surely, 2^442236939 is an apocalyptic number.

442236939 is a deficient number, since it is larger than the sum of its proper divisors (173594613).

442236939 is a wasteful number, since it uses less digits than its factorization.

442236939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5706.

The product of its digits is 279936, while the sum is 42.

The square root of 442236939 is about 21029.4303061210. The cubic root of 442236939 is about 761.8772492594.

The spelling of 442236939 in words is "four hundred forty-two million, two hundred thirty-six thousand, nine hundred thirty-nine".