3998585 has 16 divisors (see below), whose sum is σ = 4976640. Its totient is φ = 3082560.

The previous prime is 3998581. The next prime is 3998591. The reversal of 3998585 is 5858993.

It is not a de Polignac number, because 3998585 - 2² = 3998581 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3998581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20840 + ... + 21030.

It is an arithmetic number, because the mean of its divisors is an integer number (311040).

Almost surely, 2^3998585 is an apocalyptic number.

It is an amenable number.

3998585 is a deficient number, since it is larger than the sum of its proper divisors (978055).

3998585 is a wasteful number, since it uses less digits than its factorization.

3998585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328.

The product of its digits is 388800, while the sum is 47.

The square root of 3998585 is about 1999.6462187097. The cubic root of 3998585 is about 158.7213848851.

The spelling of 3998585 in words is "three million, nine hundred ninety-eight thousand, five hundred eighty-five".