445397388 has 24 divisors (see below), whose sum is σ = 1040884992. Its totient is φ = 148233744.

The previous prime is 445397387. The next prime is 445397423. The reversal of 445397388 is 883793544.

It is a self number, because there is not a number n which added to its sum of digits gives 445397388.

It is not an unprimeable number, because it can be changed into a prime (445397387) 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 7 ways as a sum of consecutive naturals, for example, 20920 + ... + 36447.

It is an arithmetic number, because the mean of its divisors is an integer number (43370208).

Almost surely, 2^445397388 is an apocalyptic number.

It is an amenable number.

445397388 is an abundant number, since it is smaller than the sum of its proper divisors (595487604).

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

445397388 is a wasteful number, since it uses less digits than its factorization.

445397388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58021 (or 58019 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 51.

The square root of 445397388 is about 21104.4400067853. The cubic root of 445397388 is about 763.6878630440.

The spelling of 445397388 in words is "four hundred forty-five million, three hundred ninety-seven thousand, three hundred eighty-eight".