3865938 has 16 divisors (see below), whose sum is σ = 7896960. Its totient is φ = 1261136.

The previous prime is 3865933. The next prime is 3865943. The reversal of 3865938 is 8395683.

It is an interprime number because it is at equal distance from previous prime (3865933) and next prime (3865943).

It is a super-3 number, since 3×3865938³ (a number of 21 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3865938.

It is not an unprimeable number, because it can be changed into a prime (3865933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6573 + ... + 7136.

It is an arithmetic number, because the mean of its divisors is an integer number (493560).

Almost surely, 2^3865938 is an apocalyptic number.

3865938 is an abundant number, since it is smaller than the sum of its proper divisors (4031022).

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

3865938 is a wasteful number, since it uses less digits than its factorization.

3865938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13761.

The product of its digits is 155520, while the sum is 42.

The square root of 3865938 is about 1966.1988709182. The cubic root of 3865938 is about 156.9464975173.

The spelling of 3865938 in words is "three million, eight hundred sixty-five thousand, nine hundred thirty-eight".