3865926 has 16 divisors (see below), whose sum is σ = 7878384. Its totient is φ = 1264224.

The previous prime is 3865913. The next prime is 3865933. The reversal of 3865926 is 6295683.

It is a super-3 number, since 3×3865926³ (a number of 21 digits) contains 333 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5761 + ... + 6396.

It is an arithmetic number, because the mean of its divisors is an integer number (492399).

Almost surely, 2^3865926 is an apocalyptic number.

3865926 is an abundant number, since it is smaller than the sum of its proper divisors (4012458).

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

3865926 is a wasteful number, since it uses less digits than its factorization.

3865926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12215.

The product of its digits is 77760, while the sum is 39.

The square root of 3865926 is about 1966.1958193425. The cubic root of 3865926 is about 156.9463351280.

The spelling of 3865926 in words is "three million, eight hundred sixty-five thousand, nine hundred twenty-six".