2539669 has 12 divisors (see below), whose sum is σ = 2830240. Its totient is φ = 2277000.

The previous prime is 2539661. The next prime is 2539699. The reversal of 2539669 is 9669352.

It is not a de Polignac number, because 2539669 - 2³ = 2539661 is a prime.

It is a super-2 number, since 2×2539669² = 12899837259122, 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 (2539661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16744 + ... + 16894.

2^2539669 is an apocalyptic number.

It is an amenable number.

2539669 is a deficient number, since it is larger than the sum of its proper divisors (290571).

2539669 is a wasteful number, since it uses less digits than its factorization.

2539669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 301 counting only the distinct ones).

The product of its digits is 87480, while the sum is 40.

The square root of 2539669 is about 1593.6338977318. The cubic root of 2539669 is about 136.4349719553.

The spelling of 2539669 in words is "two million, five hundred thirty-nine thousand, six hundred sixty-nine".