979271669 has 4 divisors (see below), whose sum is σ = 983369280. Its totient is φ = 975174060.

The previous prime is 979271641. The next prime is 979271677. The reversal of 979271669 is 966172979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 979271669 - 2²⁴ = 962494453 is a prime.

It is a super-2 number, since 2×979271669² = 1917946003412091122, 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 (979271269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2048447 + ... + 2048924.

It is an arithmetic number, because the mean of its divisors is an integer number (245842320).

Almost surely, 2^979271669 is an apocalyptic number.

It is an amenable number.

979271669 is a deficient number, since it is larger than the sum of its proper divisors (4097611).

979271669 is a wasteful number, since it uses less digits than its factorization.

979271669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097610.

The product of its digits is 2571912, while the sum is 56.

The square root of 979271669 is about 31293.3166826401. The cubic root of 979271669 is about 993.0422584409.

The spelling of 979271669 in words is "nine hundred seventy-nine million, two hundred seventy-one thousand, six hundred sixty-nine".