11939967 has 80 divisors (see below), whose sum is σ = 21954240. Its totient is φ = 6386688.

The previous prime is 11939959. The next prime is 11940017. The reversal of 11939967 is 76993911.

It is not a de Polignac number, because 11939967 - 2³ = 11939959 is a prime.

It is a super-2 number, since 2×11939967² = 285125623922178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11939947) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 411709 + ... + 411737.

It is an arithmetic number, because the mean of its divisors is an integer number (274428).

Almost surely, 2^11939967 is an apocalyptic number.

11939967 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

11939967 is a deficient number, since it is larger than the sum of its proper divisors (10014273).

11939967 is a wasteful number, since it uses less digits than its factorization.

11939967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 85 counting only the distinct ones).

The product of its digits is 91854, while the sum is 45.

The square root of 11939967 is about 3455.4257335385. The cubic root of 11939967 is about 228.5604288047.

The spelling of 11939967 in words is "eleven million, nine hundred thirty-nine thousand, nine hundred sixty-seven".