445629980 has 12 divisors (see below), whose sum is σ = 935823000. Its totient is φ = 178251984.

The previous prime is 445629923. The next prime is 445630007. The reversal of 445629980 is 89926544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11140730 + ... + 11140769.

It is an arithmetic number, because the mean of its divisors is an integer number (77985250).

Almost surely, 2^445629980 is an apocalyptic number.

It is an amenable number.

445629980 is an abundant number, since it is smaller than the sum of its proper divisors (490193020).

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

445629980 is a wasteful number, since it uses less digits than its factorization.

445629980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22281508 (or 22281506 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 445629980 is about 21109.9497867712. The cubic root of 445629980 is about 763.8207756455.

The spelling of 445629980 in words is "four hundred forty-five million, six hundred twenty-nine thousand, nine hundred eighty".