442155464 has 16 divisors (see below), whose sum is σ = 829643100. Its totient is φ = 220917312.

The previous prime is 442155463. The next prime is 442155487. The reversal of 442155464 is 464551244.

It can be written as a sum of positive squares in 2 ways, for example, as 315772900 + 126382564 = 17770^2 + 11242^2 .

It is not an unprimeable number, because it can be changed into a prime (442155463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7907 + ... + 30770.

Almost surely, 2^442155464 is an apocalyptic number.

It is an amenable number.

442155464 is a deficient number, since it is larger than the sum of its proper divisors (387487636).

442155464 is a wasteful number, since it uses less digits than its factorization.

442155464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40112 (or 40108 counting only the distinct ones).

The product of its digits is 76800, while the sum is 35.

The square root of 442155464 is about 21027.4930507657. The cubic root of 442155464 is about 761.8304585342.

The spelling of 442155464 in words is "four hundred forty-two million, one hundred fifty-five thousand, four hundred sixty-four".