979806965 has 4 divisors (see below), whose sum is σ = 1175768364. Its totient is φ = 783845568.

The previous prime is 979806941. The next prime is 979806973. The reversal of 979806965 is 569608979.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 569608979 = 821 ⋅693799.

It can be written as a sum of positive squares in 2 ways, for example, as 572453476 + 407353489 = 23926^2 + 20183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-979806965 is a prime.

It is a super-2 number, since 2×979806965² = 1920043377325022450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97980692 + ... + 97980701.

It is an arithmetic number, because the mean of its divisors is an integer number (293942091).

Almost surely, 2^979806965 is an apocalyptic number.

It is an amenable number.

979806965 is a deficient number, since it is larger than the sum of its proper divisors (195961399).

979806965 is a wasteful number, since it uses less digits than its factorization.

979806965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195961398.

The product of its (nonzero) digits is 7348320, while the sum is 59.

The square root of 979806965 is about 31301.8683947141. The cubic root of 979806965 is about 993.2231666056.

The spelling of 979806965 in words is "nine hundred seventy-nine million, eight hundred six thousand, nine hundred sixty-five".