2793978839 has 2 divisors, whose sum is σ = 2793978840. Its totient is φ = 2793978838.

The previous prime is 2793978829. The next prime is 2793978851. The reversal of 2793978839 is 9388793972.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2793978839 - 2¹⁶ = 2793913303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2793978809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1396989419 + 1396989420.

It is an arithmetic number, because the mean of its divisors is an integer number (1396989420).

Almost surely, 2^2793978839 is an apocalyptic number.

2793978839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2793978839 is an equidigital number, since it uses as much as digits as its factorization.

2793978839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41150592, while the sum is 65.

The square root of 2793978839 is about 52858.1009779958. The cubic root of 2793978839 is about 1408.4487137274.

The spelling of 2793978839 in words is "two billion, seven hundred ninety-three million, nine hundred seventy-eight thousand, eight hundred thirty-nine".