386944945 has 16 divisors (see below), whose sum is σ = 480172032. Its totient is φ = 299033280.

The previous prime is 386944907. The next prime is 386944963. The reversal of 386944945 is 549449683.

It is not a de Polignac number, because 386944945 - 2²³ = 378556337 is a prime.

It is a super-2 number, since 2×386944945² = 299452780922106050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 386944892 and 386944901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99304 + ... + 103126.

It is an arithmetic number, because the mean of its divisors is an integer number (30010752).

Almost surely, 2^386944945 is an apocalyptic number.

It is an amenable number.

386944945 is a deficient number, since it is larger than the sum of its proper divisors (93227087).

386944945 is a wasteful number, since it uses less digits than its factorization.

386944945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4512.

The product of its digits is 3732480, while the sum is 52.

The square root of 386944945 is about 19670.9162216710. The cubic root of 386944945 is about 728.7016045660.

The spelling of 386944945 in words is "three hundred eighty-six million, nine hundred forty-four thousand, nine hundred forty-five".