3865288408 has 64 divisors (see below), whose sum is σ = 7720272000. Its totient is φ = 1809130752.

The previous prime is 3865288397. The next prime is 3865288411. The reversal of 3865288408 is 8048825683.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 8725035 + ... + 8725477.

It is an arithmetic number, because the mean of its divisors is an integer number (120629250).

Almost surely, 2^3865288408 is an apocalyptic number.

3865288408 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3865288408 is a deficient number, since it is larger than the sum of its proper divisors (3854983592).

3865288408 is a wasteful number, since it uses less digits than its factorization.

3865288408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024 (or 1020 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 52.

The square root of 3865288408 is about 62171.4436699036. The cubic root of 3865288408 is about 1569.3770647266.

The spelling of 3865288408 in words is "three billion, eight hundred sixty-five million, two hundred eighty-eight thousand, four hundred eight".