4085931 has 16 divisors (see below), whose sum is σ = 5801600. Its totient is φ = 2550528.

The previous prime is 4085923. The next prime is 4085941. The reversal of 4085931 is 1395804.

It is not a de Polignac number, because 4085931 - 2³ = 4085923 is a prime.

It is a super-2 number, since 2×4085931² = 33389664273522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4085941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5160 + ... + 5898.

It is an arithmetic number, because the mean of its divisors is an integer number (362600).

Almost surely, 2^4085931 is an apocalyptic number.

4085931 is a deficient number, since it is larger than the sum of its proper divisors (1715669).

4085931 is a wasteful number, since it uses less digits than its factorization.

4085931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 4085931 is about 2021.3685957786. The cubic root of 4085931 is about 159.8687856510.

The spelling of 4085931 in words is "four million, eighty-five thousand, nine hundred thirty-one".