3865392 has 60 divisors (see below), whose sum is σ = 11461320. Its totient is φ = 1211904.

The previous prime is 3865363. The next prime is 3865429. The reversal of 3865392 is 2935683.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1659 + ... + 3237.

It is an arithmetic number, because the mean of its divisors is an integer number (191022).

Almost surely, 2^3865392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3865392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5730660).

3865392 is an abundant number, since it is smaller than the sum of its proper divisors (7595928).

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

3865392 is a wasteful number, since it uses less digits than its factorization.

3865392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1601 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 3865392 is about 1966.0600194297. The cubic root of 3865392 is about 156.9391084677.

It can be divided in two parts, 386 and 5392, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 3865392 in words is "three million, eight hundred sixty-five thousand, three hundred ninety-two".