442949904 has 40 divisors (see below), whose sum is σ = 1271431520. Its totient is φ = 147649824.

The previous prime is 442949879. The next prime is 442949929. The reversal of 442949904 is 409949244.

It is an interprime number because it is at equal distance from previous prime (442949879) and next prime (442949929).

It is a self number, because there is not a number n which added to its sum of digits gives 442949904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512242 + ... + 513105.

It is an arithmetic number, because the mean of its divisors is an integer number (31785788).

Almost surely, 2^442949904 is an apocalyptic number.

It is an amenable number.

442949904 is an abundant number, since it is smaller than the sum of its proper divisors (828481616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442949904 is a wasteful number, since it uses less digits than its factorization.

442949904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025364 (or 1025352 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 442949904 is about 21046.3750798089. The cubic root of 442949904 is about 762.2864568726.

The spelling of 442949904 in words is "four hundred forty-two million, nine hundred forty-nine thousand, nine hundred four".