34979221 has 2 divisors, whose sum is σ = 34979222. Its totient is φ = 34979220.

The previous prime is 34979207. The next prime is 34979239. The reversal of 34979221 is 12297943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25300900 + 9678321 = 5030^2 + 3111^2 .

It is a cyclic number.

It is not a de Polignac number, because 34979221 - 2⁷ = 34979093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34979201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17489610 + 17489611.

It is an arithmetic number, because the mean of its divisors is an integer number (17489611).

Almost surely, 2^34979221 is an apocalyptic number.

It is an amenable number.

34979221 is a deficient number, since it is larger than the sum of its proper divisors (1).

34979221 is an equidigital number, since it uses as much as digits as its factorization.

34979221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 34979221 is about 5914.3233763466. The cubic root of 34979221 is about 327.0418853597.

The spelling of 34979221 in words is "thirty-four million, nine hundred seventy-nine thousand, two hundred twenty-one".