3997392 has 40 divisors (see below), whose sum is σ = 11802816. Its totient is φ = 1142016.

The previous prime is 3997381. The next prime is 3997403. The reversal of 3997392 is 2937993.

It is an interprime number because it is at equal distance from previous prime (3997381) and next prime (3997403).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 5613 + ... + 6284.

Almost surely, 2^3997392 is an apocalyptic number.

It is an amenable number.

3997392 is an abundant number, since it is smaller than the sum of its proper divisors (7805424).

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

3997392 is a wasteful number, since it uses less digits than its factorization.

3997392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11915 (or 11909 counting only the distinct ones).

The product of its digits is 91854, while the sum is 42.

The square root of 3997392 is about 1999.3478936893. The cubic root of 3997392 is about 158.7055981800.

The spelling of 3997392 in words is "three million, nine hundred ninety-seven thousand, three hundred ninety-two".