2879638739 has 2 divisors, whose sum is σ = 2879638740. Its totient is φ = 2879638738.

The previous prime is 2879638733. The next prime is 2879638753. The reversal of 2879638739 is 9378369782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2879638739 is a prime.

It is not a weakly prime, because it can be changed into another prime (2879638733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439819369 + 1439819370.

It is an arithmetic number, because the mean of its divisors is an integer number (1439819370).

Almost surely, 2^2879638739 is an apocalyptic number.

2879638739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2879638739 is an equidigital number, since it uses as much as digits as its factorization.

2879638739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27433728, while the sum is 62.

The square root of 2879638739 is about 53662.2655037970. The cubic root of 2879638739 is about 1422.6978301033.

The spelling of 2879638739 in words is "two billion, eight hundred seventy-nine million, six hundred thirty-eight thousand, seven hundred thirty-nine".