21413179 has 2 divisors, whose sum is σ = 21413180. Its totient is φ = 21413178.

The previous prime is 21413167. The next prime is 21413191. The reversal of 21413179 is 97131412.

It is a balanced prime because it is at equal distance from previous prime (21413167) and next prime (21413191).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21413179 is a prime.

It is not a weakly prime, because it can be changed into another prime (21413279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706589 + 10706590.

It is an arithmetic number, because the mean of its divisors is an integer number (10706590).

Almost surely, 2^21413179 is an apocalyptic number.

21413179 is a deficient number, since it is larger than the sum of its proper divisors (1).

21413179 is an equidigital number, since it uses as much as digits as its factorization.

21413179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 28.

The square root of 21413179 is about 4627.4376278887. The cubic root of 21413179 is about 277.6900907877.

The spelling of 21413179 in words is "twenty-one million, four hundred thirteen thousand, one hundred seventy-nine".