3999320 has 32 divisors (see below), whose sum is σ = 9691920. Its totient is φ = 1476480.

The previous prime is 3999313. The next prime is 3999323. The reversal of 3999320 is 239993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999323) 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, 3326 + ... + 4365.

Almost surely, 2^3999320 is an apocalyptic number.

It is an amenable number.

3999320 is an abundant number, since it is smaller than the sum of its proper divisors (5692600).

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

3999320 is a wasteful number, since it uses less digits than its factorization.

3999320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7715 (or 7711 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 3999320 is about 1999.8299927744. The cubic root of 3999320 is about 158.7311094144.

The spelling of 3999320 in words is "three million, nine hundred ninety-nine thousand, three hundred twenty".