11658979 has 2 divisors, whose sum is σ = 11658980. Its totient is φ = 11658978.

The previous prime is 11658949. The next prime is 11659003. The reversal of 11658979 is 97985611.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (97985611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11658979 - 2⁷ = 11658851 is a prime.

It is not a weakly prime, because it can be changed into another prime (11658919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5829489 + 5829490.

It is an arithmetic number, because the mean of its divisors is an integer number (5829490).

Almost surely, 2^11658979 is an apocalyptic number.

11658979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11658979 is an equidigital number, since it uses as much as digits as its factorization.

11658979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 46.

The square root of 11658979 is about 3414.5247107028. The cubic root of 11658979 is about 226.7532428312.

It can be divided in two parts, 116 and 58979, that added together give a palindrome (59095).

The spelling of 11658979 in words is "eleven million, six hundred fifty-eight thousand, nine hundred seventy-nine".