11995839 has 24 divisors (see below), whose sum is σ = 17937920. Its totient is φ = 7720272.

The previous prime is 11995831. The next prime is 11995843. The reversal of 11995839 is 93859911.

It is not a de Polignac number, because 11995839 - 2³ = 11995831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11995794 and 11995803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11995831) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53682 + ... + 53904.

Almost surely, 2^11995839 is an apocalyptic number.

11995839 is a deficient number, since it is larger than the sum of its proper divisors (5942081).

11995839 is a wasteful number, since it uses less digits than its factorization.

11995839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 408 counting only the distinct ones).

The product of its digits is 87480, while the sum is 45.

The square root of 11995839 is about 3463.5009744477. The cubic root of 11995839 is about 228.9163834739.

The spelling of 11995839 in words is "eleven million, nine hundred ninety-five thousand, eight hundred thirty-nine".