11911867 has 8 divisors (see below), whose sum is σ = 13019760. Its totient is φ = 10808160.

The previous prime is 11911859. The next prime is 11911873. The reversal of 11911867 is 76811911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11911867 - 2³ = 11911859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11911807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10609 + ... + 11677.

It is an arithmetic number, because the mean of its divisors is an integer number (1627470).

Almost surely, 2^11911867 is an apocalyptic number.

11911867 is a deficient number, since it is larger than the sum of its proper divisors (1107893).

11911867 is a wasteful number, since it uses less digits than its factorization.

11911867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093.

The product of its digits is 3024, while the sum is 34.

The square root of 11911867 is about 3451.3572692493. The cubic root of 11911867 is about 228.3809868513.

The spelling of 11911867 in words is "eleven million, nine hundred eleven thousand, eight hundred sixty-seven".