387949525 has 6 divisors (see below), whose sum is σ = 481057442. Its totient is φ = 310359600.

The previous prime is 387949511. The next prime is 387949577. The reversal of 387949525 is 525949783.

387949525 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 5121169 + 382828356 = 2263^2 + 19566^2 .

It is a de Polignac number, because none of the positive numbers 2^k-387949525 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7758966 + ... + 7759015.

Almost surely, 2^387949525 is an apocalyptic number.

It is an amenable number.

387949525 is a deficient number, since it is larger than the sum of its proper divisors (93107917).

387949525 is a wasteful number, since it uses less digits than its factorization.

387949525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15517991 (or 15517986 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 52.

The square root of 387949525 is about 19696.4343219782. The cubic root of 387949525 is about 729.3316739311.

The spelling of 387949525 in words is "three hundred eighty-seven million, nine hundred forty-nine thousand, five hundred twenty-five".