979911211 has 4 divisors (see below), whose sum is σ = 980415424. Its totient is φ = 979407000.

The previous prime is 979911173. The next prime is 979911221. The reversal of 979911211 is 112119979.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 979911211 - 2¹⁵ = 979878443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979911221) 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 in 3 ways as a sum of consecutive naturals, for example, 249180 + ... + 253081.

It is an arithmetic number, because the mean of its divisors is an integer number (245103856).

Almost surely, 2^979911211 is an apocalyptic number.

979911211 is a deficient number, since it is larger than the sum of its proper divisors (504213).

979911211 is a wasteful number, since it uses less digits than its factorization.

979911211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504212.

The product of its digits is 10206, while the sum is 40.

The square root of 979911211 is about 31303.5335225913. The cubic root of 979911211 is about 993.2583898261.

The spelling of 979911211 in words is "nine hundred seventy-nine million, nine hundred eleven thousand, two hundred eleven".