2539967 has 4 divisors (see below), whose sum is σ = 2599080. Its totient is φ = 2480856.

The previous prime is 2539963. The next prime is 2539981. The reversal of 2539967 is 7699352.

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 2539967 - 2² = 2539963 is a prime.

It is a super-2 number, since 2×2539967² = 12902864722178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539961) 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 3 ways as a sum of consecutive naturals, for example, 29492 + ... + 29577.

It is an arithmetic number, because the mean of its divisors is an integer number (649770).

2^2539967 is an apocalyptic number.

2539967 is a deficient number, since it is larger than the sum of its proper divisors (59113).

2539967 is an equidigital number, since it uses as much as digits as its factorization.

2539967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59112.

The product of its digits is 102060, while the sum is 41.

The square root of 2539967 is about 1593.7273919965. The cubic root of 2539967 is about 136.4403080879.

The spelling of 2539967 in words is "two million, five hundred thirty-nine thousand, nine hundred sixty-seven".