3865749408 has 96 divisors (see below), whose sum is σ = 11938389120. Its totient is φ = 1212779520.

The previous prime is 3865749397. The next prime is 3865749409. The reversal of 3865749408 is 8049475683.

3865749408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (3865749409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116908 + ... + 146283.

It is an arithmetic number, because the mean of its divisors is an integer number (124358220).

Almost surely, 2^3865749408 is an apocalyptic number.

It is an amenable number.

3865749408 is an abundant number, since it is smaller than the sum of its proper divisors (8072639712).

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

3865749408 is a wasteful number, since it uses less digits than its factorization.

3865749408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263227 (or 263213 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The square root of 3865749408 is about 62175.1510492737. The cubic root of 3865749408 is about 1569.4394536948.

The spelling of 3865749408 in words is "three billion, eight hundred sixty-five million, seven hundred forty-nine thousand, four hundred eight".