3865639480 has 16 divisors (see below), whose sum is σ = 8697688920. Its totient is φ = 1546255776.

The previous prime is 3865639451. The next prime is 3865639493. The reversal of 3865639480 is 849365683.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48320454 + ... + 48320533.

Almost surely, 2^3865639480 is an apocalyptic number.

It is an amenable number.

3865639480 is an abundant number, since it is smaller than the sum of its proper divisors (4832049440).

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

3865639480 is a wasteful number, since it uses less digits than its factorization.

3865639480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96640998 (or 96640994 counting only the distinct ones).

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

The square root of 3865639480 is about 62174.2670242280. The cubic root of 3865639480 is about 1569.4245771506.

The spelling of 3865639480 in words is "three billion, eight hundred sixty-five million, six hundred thirty-nine thousand, four hundred eighty".