3999580 has 24 divisors (see below), whose sum is σ = 9045792. Its totient is φ = 1476672.

The previous prime is 3999577. The next prime is 3999581. The reversal of 3999580 is 859993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3999581) 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, 7432 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (376908).

Almost surely, 2^3999580 is an apocalyptic number.

It is an amenable number.

3999580 is an abundant number, since it is smaller than the sum of its proper divisors (5046212).

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

3999580 is a wasteful number, since it uses less digits than its factorization.

3999580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15405 (or 15403 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 3999580 is about 1999.8949972436. The cubic root of 3999580 is about 158.7345490987.

The spelling of 3999580 in words is "three million, nine hundred ninety-nine thousand, five hundred eighty".