11952639 has 12 divisors (see below), whose sum is σ = 17822272. Its totient is φ = 7711200.

The previous prime is 11952623. The next prime is 11952671. The reversal of 11952639 is 93625911.

11952639 is a `hidden beast` number, since 1 + 19 + 5 + 2 + 639 = 666.

It is not a de Polignac number, because 11952639 - 2⁴ = 11952623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11952679) 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, 21142 + ... + 21699.

Almost surely, 2^11952639 is an apocalyptic number.

11952639 is a deficient number, since it is larger than the sum of its proper divisors (5869633).

11952639 is a wasteful number, since it uses less digits than its factorization.

11952639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42878 (or 42875 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 11952639 is about 3457.2588853021. The cubic root of 11952639 is about 228.6412579988.

The spelling of 11952639 in words is "eleven million, nine hundred fifty-two thousand, six hundred thirty-nine".