4089931 has 4 divisors (see below), whose sum is σ = 4102000. Its totient is φ = 4077864.

The previous prime is 4089907. The next prime is 4089937. The reversal of 4089931 is 1399804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4089931 - 2¹¹ = 4087883 is a prime.

It is a super-2 number, since 2×4089931² = 33455071169522, which contains 22 as substring.

It is a Duffinian number.

4089931 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4089937) 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, 5511 + ... + 6208.

It is an arithmetic number, because the mean of its divisors is an integer number (1025500).

Almost surely, 2^4089931 is an apocalyptic number.

4089931 is a deficient number, since it is larger than the sum of its proper divisors (12069).

4089931 is a wasteful number, since it uses less digits than its factorization.

4089931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12068.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 4089931 is about 2022.3577823916. The cubic root of 4089931 is about 159.9209375009.

The spelling of 4089931 in words is "four million, eighty-nine thousand, nine hundred thirty-one".