979797143 has 4 divisors (see below), whose sum is σ = 1055166168. Its totient is φ = 904428120.

The previous prime is 979797139. The next prime is 979797157. The reversal of 979797143 is 341797979.

979797143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341797979 = 443 ⋅771553.

It is a cyclic number.

It is not a de Polignac number, because 979797143 - 2² = 979797139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979797113) 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, 37684493 + ... + 37684518.

It is an arithmetic number, because the mean of its divisors is an integer number (263791542).

Almost surely, 2^979797143 is an apocalyptic number.

979797143 is a deficient number, since it is larger than the sum of its proper divisors (75369025).

979797143 is a wasteful number, since it uses less digits than its factorization.

979797143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75369024.

The product of its digits is 3000564, while the sum is 56.

The square root of 979797143 is about 31301.7115027278. The cubic root of 979797143 is about 993.2198477646.

The spelling of 979797143 in words is "nine hundred seventy-nine million, seven hundred ninety-seven thousand, one hundred forty-three".