11139979 has 2 divisors, whose sum is σ = 11139980. Its totient is φ = 11139978.

The previous prime is 11139959. The next prime is 11139991. The reversal of 11139979 is 97993111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11139979 - 2⁷ = 11139851 is a prime.

It is not a weakly prime, because it can be changed into another prime (11139929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5569989 + 5569990.

It is an arithmetic number, because the mean of its divisors is an integer number (5569990).

Almost surely, 2^11139979 is an apocalyptic number.

11139979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11139979 is an equidigital number, since it uses as much as digits as its factorization.

11139979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15309, while the sum is 40.

The square root of 11139979 is about 3337.6607077413. The cubic root of 11139979 is about 223.3374007328.

The spelling of 11139979 in words is "eleven million, one hundred thirty-nine thousand, nine hundred seventy-nine".