3865408 has 14 divisors (see below), whose sum is σ = 7670546. Its totient is φ = 1932672.

The previous prime is 3865363. The next prime is 3865429. The reversal of 3865408 is 8045683.

It can be written as a sum of positive squares in only one way, i.e., 2849344 + 1016064 = 1688^2 + 1008^2 .

It is a d-powerful number, because it can be written as 3¹³ + 8⁵ + 6⁶ + 5⁷ + 4⁷ + 0 + 8⁷ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30135 + ... + 30262.

Almost surely, 2^3865408 is an apocalyptic number.

It is an amenable number.

3865408 is a deficient number, since it is larger than the sum of its proper divisors (3805138).

3865408 is an equidigital number, since it uses as much as digits as its factorization.

3865408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60409 (or 60399 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 3865408 is about 1966.0640884773. The cubic root of 3865408 is about 156.9393250065.

The spelling of 3865408 in words is "three million, eight hundred sixty-five thousand, four hundred eight".