10011979 has 2 divisors, whose sum is σ = 10011980. Its totient is φ = 10011978.

The previous prime is 10011973. The next prime is 10012001. The reversal of 10011979 is 97911001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10011979 - 2⁷ = 10011851 is a prime.

It is not a weakly prime, because it can be changed into another prime (10011973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005989 + 5005990.

It is an arithmetic number, because the mean of its divisors is an integer number (5005990).

Almost surely, 2^10011979 is an apocalyptic number.

10011979 is a deficient number, since it is larger than the sum of its proper divisors (1).

10011979 is an equidigital number, since it uses as much as digits as its factorization.

10011979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 10011979 is about 3164.1711394929. The cubic root of 10011979 is about 215.5294612528.

The spelling of 10011979 in words is "ten million, eleven thousand, nine hundred seventy-nine".