442279168 has 18 divisors (see below), whose sum is σ = 882831194. Its totient is φ = 221139456.

The previous prime is 442279153. The next prime is 442279183. The reversal of 442279168 is 861972244.

It is an interprime number because it is at equal distance from previous prime (442279153) and next prime (442279183).

It can be written as a sum of positive squares in only one way, i.e., 431309824 + 10969344 = 20768^2 + 3312^2 .

It is a super-2 number, since 2×442279168² = 391221724893544448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 863571 + ... + 864082.

Almost surely, 2^442279168 is an apocalyptic number.

It is an amenable number.

442279168 is a deficient number, since it is larger than the sum of its proper divisors (440552026).

442279168 is an equidigital number, since it uses as much as digits as its factorization.

442279168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727669 (or 1727655 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 442279168 is about 21030.4343274218. The cubic root of 442279168 is about 761.9014989225.

The spelling of 442279168 in words is "four hundred forty-two million, two hundred seventy-nine thousand, one hundred sixty-eight".