2699078139 has 8 divisors (see below), whose sum is σ = 3998634320. Its totient is φ = 1799385408.

The previous prime is 2699078131. The next prime is 2699078141. The reversal of 2699078139 is 9318709962.

2699078139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2699078139 - 2³ = 2699078131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2699078131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49982902 + ... + 49982955.

It is an arithmetic number, because the mean of its divisors is an integer number (499829290).

Almost surely, 2^2699078139 is an apocalyptic number.

2699078139 is a deficient number, since it is larger than the sum of its proper divisors (1299556181).

2699078139 is an equidigital number, since it uses as much as digits as its factorization.

2699078139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99965866 (or 99965860 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The square root of 2699078139 is about 51952.6528581554. The cubic root of 2699078139 is about 1392.3181542765.

The spelling of 2699078139 in words is "two billion, six hundred ninety-nine million, seventy-eight thousand, one hundred thirty-nine".