3865407 has 16 divisors (see below), whose sum is σ = 6343680. Its totient is φ = 2038752.

The previous prime is 3865363. The next prime is 3865429. The reversal of 3865407 is 7045683.

It is not a de Polignac number, because 3865407 - 2¹⁴ = 3849023 is a prime.

3865407 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6807 + ... + 7352.

It is an arithmetic number, because the mean of its divisors is an integer number (396480).

Almost surely, 2^3865407 is an apocalyptic number.

3865407 is a deficient number, since it is larger than the sum of its proper divisors (2478273).

3865407 is a wasteful number, since it uses less digits than its factorization.

3865407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14182.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 3865407 is about 1966.0638341621. The cubic root of 3865407 is about 156.9393114729.

The spelling of 3865407 in words is "three million, eight hundred sixty-five thousand, four hundred seven".