979202221 has 16 divisors (see below), whose sum is σ = 1058682240. Its totient is φ = 902638080.

The previous prime is 979202167. The next prime is 979202243. The reversal of 979202221 is 122202979.

It is a cyclic number.

It is not a de Polignac number, because 979202221 - 2⁹ = 979201709 is a prime.

It is a super-2 number, since 2×979202221² = 1917673979222665682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979202281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335856 + ... + 338758.

It is an arithmetic number, because the mean of its divisors is an integer number (66167640).

Almost surely, 2^979202221 is an apocalyptic number.

It is an amenable number.

979202221 is a deficient number, since it is larger than the sum of its proper divisors (79480019).

979202221 is a wasteful number, since it uses less digits than its factorization.

979202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3396.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 979202221 is about 31292.2070330618. The cubic root of 979202221 is about 993.0187830250.

The spelling of 979202221 in words is "nine hundred seventy-nine million, two hundred two thousand, two hundred twenty-one".