3999056 has 20 divisors (see below), whose sum is σ = 8085792. Its totient is φ = 1912416.

The previous prime is 3999053. The next prime is 3999067. The reversal of 3999056 is 6509993.

It is a happy number.

It is a super-2 number, since 2×3999056² = 31984897782272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5066 + ... + 5801.

Almost surely, 2^3999056 is an apocalyptic number.

It is an amenable number.

3999056 is an abundant number, since it is smaller than the sum of its proper divisors (4086736).

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

3999056 is a wasteful number, since it uses less digits than its factorization.

3999056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10898 (or 10892 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 3999056 is about 1999.7639860744. The cubic root of 3999056 is about 158.7276166594.

The spelling of 3999056 in words is "three million, nine hundred ninety-nine thousand, fifty-six".