387932945 has 16 divisors (see below), whose sum is σ = 493523280. Its totient is φ = 291723264.

The previous prime is 387932921. The next prime is 387932957. The reversal of 387932945 is 549239783.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 19254544 + 368678401 = 4388^2 + 19201^2 .

It is not a de Polignac number, because 387932945 - 2²⁰ = 386884369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 387932893 and 387932902.

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, 78611 + ... + 83399.

It is an arithmetic number, because the mean of its divisors is an integer number (30845205).

Almost surely, 2^387932945 is an apocalyptic number.

It is an amenable number.

387932945 is a deficient number, since it is larger than the sum of its proper divisors (105590335).

387932945 is a wasteful number, since it uses less digits than its factorization.

387932945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764.

The product of its digits is 1632960, while the sum is 50.

The square root of 387932945 is about 19696.0134291181. The cubic root of 387932945 is about 729.3212838411.

The spelling of 387932945 in words is "three hundred eighty-seven million, nine hundred thirty-two thousand, nine hundred forty-five".