979044421 has 2 divisors, whose sum is σ = 979044422. Its totient is φ = 979044420.

The previous prime is 979044389. The next prime is 979044439. The reversal of 979044421 is 124440979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 974313796 + 4730625 = 31214^2 + 2175^2 .

It is a cyclic number.

It is not a de Polignac number, because 979044421 - 2⁵ = 979044389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979044491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489522210 + 489522211.

It is an arithmetic number, because the mean of its divisors is an integer number (489522211).

Almost surely, 2^979044421 is an apocalyptic number.

It is an amenable number.

979044421 is a deficient number, since it is larger than the sum of its proper divisors (1).

979044421 is an equidigital number, since it uses as much as digits as its factorization.

979044421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 979044421 is about 31289.6855369305. The cubic root of 979044421 is about 992.9654379723.

The spelling of 979044421 in words is "nine hundred seventy-nine million, forty-four thousand, four hundred twenty-one".