11999967 has 32 divisors (see below), whose sum is σ = 19041792. Its totient is φ = 6580224.

The previous prime is 11999941. The next prime is 11999987. The reversal of 11999967 is 76999911.

It is not a de Polignac number, because 11999967 - 2⁶ = 11999903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11999927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87523 + ... + 87659.

It is an arithmetic number, because the mean of its divisors is an integer number (595056).

Almost surely, 2^11999967 is an apocalyptic number.

11999967 is a deficient number, since it is larger than the sum of its proper divisors (7041825).

11999967 is a wasteful number, since it uses less digits than its factorization.

11999967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287.

The product of its digits is 275562, while the sum is 51.

The square root of 11999967 is about 3464.0968519948. The cubic root of 11999967 is about 228.9426386462.

The spelling of 11999967 in words is "eleven million, nine hundred ninety-nine thousand, nine hundred sixty-seven".