445349138 has 24 divisors (see below), whose sum is σ = 754826688. Its totient is φ = 196605552.

The previous prime is 445349123. The next prime is 445349197. The reversal of 445349138 is 831943544.

It is a junction number, because it is equal to n+sod(n) for n = 445349095 and 445349104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20870 + ... + 36417.

It is an arithmetic number, because the mean of its divisors is an integer number (31451112).

Almost surely, 2^445349138 is an apocalyptic number.

445349138 is a deficient number, since it is larger than the sum of its proper divisors (309477550).

445349138 is a wasteful number, since it uses less digits than its factorization.

445349138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57338 (or 57325 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 445349138 is about 21103.2968514401. The cubic root of 445349138 is about 763.6602852217.

The spelling of 445349138 in words is "four hundred forty-five million, three hundred forty-nine thousand, one hundred thirty-eight".