11992479 has 4 divisors (see below), whose sum is σ = 15989976. Its totient is φ = 7994984.

The previous prime is 11992447. The next prime is 11992489. The reversal of 11992479 is 97429911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97429911 = 3 ⋅32476637.

It is a cyclic number.

It is not a de Polignac number, because 11992479 - 2⁵ = 11992447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11992479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11992489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1998744 + ... + 1998749.

It is an arithmetic number, because the mean of its divisors is an integer number (3997494).

Almost surely, 2^11992479 is an apocalyptic number.

11992479 is a deficient number, since it is larger than the sum of its proper divisors (3997497).

11992479 is an equidigital number, since it uses as much as digits as its factorization.

11992479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997496.

The product of its digits is 40824, while the sum is 42.

The square root of 11992479 is about 3463.0158821467. The cubic root of 11992479 is about 228.8950085379.

The spelling of 11992479 in words is "eleven million, nine hundred ninety-two thousand, four hundred seventy-nine".