11400979 has 2 divisors, whose sum is σ = 11400980. Its totient is φ = 11400978.

The previous prime is 11400971. The next prime is 11400997. The reversal of 11400979 is 97900411.

Together with next prime (11400997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11400979 - 2³ = 11400971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11400979.

It is not a weakly prime, because it can be changed into another prime (11400971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5700489 + 5700490.

It is an arithmetic number, because the mean of its divisors is an integer number (5700490).

Almost surely, 2^11400979 is an apocalyptic number.

11400979 is a deficient number, since it is larger than the sum of its proper divisors (1).

11400979 is an equidigital number, since it uses as much as digits as its factorization.

11400979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 11400979 is about 3376.5335775022. The cubic root of 11400979 is about 225.0681538393.

The spelling of 11400979 in words is "eleven million, four hundred thousand, nine hundred seventy-nine".