2539931 has 4 divisors (see below), whose sum is σ = 2550072. Its totient is φ = 2529792.

The previous prime is 2539871. The next prime is 2539951. The reversal of 2539931 is 1399352.

2539931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2539931 is a prime.

It is a super-2 number, since 2×2539931² = 12902498969522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2539951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4685 + ... + 5198.

It is an arithmetic number, because the mean of its divisors is an integer number (637518).

2^2539931 is an apocalyptic number.

2539931 is a deficient number, since it is larger than the sum of its proper divisors (10141).

2539931 is an equidigital number, since it uses as much as digits as its factorization.

2539931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10140.

The product of its digits is 7290, while the sum is 32.

The square root of 2539931 is about 1593.7160976786. The cubic root of 2539931 is about 136.4396634766.

The spelling of 2539931 in words is "two million, five hundred thirty-nine thousand, nine hundred thirty-one".