6976979869 has 4 divisors (see below), whose sum is σ = 7007447260. Its totient is φ = 6946512480.

The previous prime is 6976979857. The next prime is 6976979897. The reversal of 6976979869 is 9689796796.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4601587225 + 2375392644 = 67835^2 + 48738^2 .

It is a cyclic number.

It is not a de Polignac number, because 6976979869 - 2⁹ = 6976979357 is a prime.

It is a super-2 number, since 2×6976979869² = 97356496184862514322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6976979795 and 6976979804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6976979899) 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, 15233352 + ... + 15233809.

It is an arithmetic number, because the mean of its divisors is an integer number (1751861815).

Almost surely, 2^6976979869 is an apocalyptic number.

It is an amenable number.

6976979869 is a deficient number, since it is larger than the sum of its proper divisors (30467391).

6976979869 is a wasteful number, since it uses less digits than its factorization.

6976979869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30467390.

The product of its digits is 555532992, while the sum is 76.

The square root of 6976979869 is about 83528.3177670902. The cubic root of 6976979869 is about 1910.8319310178.

The spelling of 6976979869 in words is "six billion, nine hundred seventy-six million, nine hundred seventy-nine thousand, eight hundred sixty-nine".