442361939 has 4 divisors (see below), whose sum is σ = 448964424. Its totient is φ = 435759456.

The previous prime is 442361929. The next prime is 442361957. The reversal of 442361939 is 939163244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442361939 - 2¹⁶ = 442296403 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442361896 and 442361905.

It is not an unprimeable number, because it can be changed into a prime (442361929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3301142 + ... + 3301275.

It is an arithmetic number, because the mean of its divisors is an integer number (112241106).

Almost surely, 2^442361939 is an apocalyptic number.

442361939 is a deficient number, since it is larger than the sum of its proper divisors (6602485).

442361939 is an equidigital number, since it uses as much as digits as its factorization.

442361939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602484.

The product of its digits is 139968, while the sum is 41.

The square root of 442361939 is about 21032.4021214886. The cubic root of 442361939 is about 761.9490250251.

The spelling of 442361939 in words is "four hundred forty-two million, three hundred sixty-one thousand, nine hundred thirty-nine".