3996388 has 36 divisors (see below), whose sum is σ = 8043840. Its totient is φ = 1732720.

The previous prime is 3996379. The next prime is 3996397. The reversal of 3996388 is 8836993.

It is an interprime number because it is at equal distance from previous prime (3996379) and next prime (3996397).

It is a super-2 number, since 2×3996388² = 31942234093088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10953 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (223440).

Almost surely, 2^3996388 is an apocalyptic number.

It is an amenable number.

3996388 is an abundant number, since it is smaller than the sum of its proper divisors (4047452).

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

3996388 is a wasteful number, since it uses less digits than its factorization.

3996388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 395 counting only the distinct ones).

The product of its digits is 279936, while the sum is 46.

The square root of 3996388 is about 1999.0967960557. The cubic root of 3996388 is about 158.6923100359.

The spelling of 3996388 in words is "three million, nine hundred ninety-six thousand, three hundred eighty-eight".