11719939 has 24 divisors (see below), whose sum is σ = 14976864. Its totient is φ = 8976000.

The previous prime is 11719933. The next prime is 11719957. The reversal of 11719939 is 93991711.

11719939 = T₅₀ + T₅₁ + ... + T₄₁₂.

It is not a de Polignac number, because 11719939 - 2⁹ = 11719427 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11719933) 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 23 ways as a sum of consecutive naturals, for example, 85479 + ... + 85615.

It is an arithmetic number, because the mean of its divisors is an integer number (624036).

Almost surely, 2^11719939 is an apocalyptic number.

11719939 is a deficient number, since it is larger than the sum of its proper divisors (3256925).

11719939 is a wasteful number, since it uses less digits than its factorization.

11719939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 256 counting only the distinct ones).

The product of its digits is 15309, while the sum is 40.

The square root of 11719939 is about 3423.4396445680. The cubic root of 11719939 is about 227.1477558225.

The spelling of 11719939 in words is "eleven million, seven hundred nineteen thousand, nine hundred thirty-nine".