969879839 has 2 divisors, whose sum is σ = 969879840. Its totient is φ = 969879838.

The previous prime is 969879821. The next prime is 969879901. The reversal of 969879839 is 938978969.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 969879839 - 2²⁰ = 968831263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (969879139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484939919 + 484939920.

It is an arithmetic number, because the mean of its divisors is an integer number (484939920).

Almost surely, 2^969879839 is an apocalyptic number.

969879839 is a deficient number, since it is larger than the sum of its proper divisors (1).

969879839 is an equidigital number, since it uses as much as digits as its factorization.

969879839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52907904, while the sum is 68.

The square root of 969879839 is about 31142.8938764528. The cubic root of 969879839 is about 989.8574222452.

The spelling of 969879839 in words is "nine hundred sixty-nine million, eight hundred seventy-nine thousand, eight hundred thirty-nine".