445507404 has 12 divisors (see below), whose sum is σ = 1039517304. Its totient is φ = 148502464.

The previous prime is 445507331. The next prime is 445507409. The reversal of 445507404 is 404705544.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (445507409) 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, 18562797 + ... + 18562820.

It is an arithmetic number, because the mean of its divisors is an integer number (86626442).

Almost surely, 2^445507404 is an apocalyptic number.

It is an amenable number.

445507404 is an abundant number, since it is smaller than the sum of its proper divisors (594009900).

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

445507404 is a wasteful number, since it uses less digits than its factorization.

445507404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37125624 (or 37125622 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 33.

The square root of 445507404 is about 21107.0463115994. The cubic root of 445507404 is about 763.7507364611.

The spelling of 445507404 in words is "four hundred forty-five million, five hundred seven thousand, four hundred four".