2634239739 has 4 divisors (see below), whose sum is σ = 3512319656. Its totient is φ = 1756159824.

The previous prime is 2634239731. The next prime is 2634239759. The reversal of 2634239739 is 9379324362.

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

It is not a de Polignac number, because 2634239739 - 2³ = 2634239731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2634239731) 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, 439039954 + ... + 439039959.

It is an arithmetic number, because the mean of its divisors is an integer number (878079914).

Almost surely, 2^2634239739 is an apocalyptic number.

2634239739 is a deficient number, since it is larger than the sum of its proper divisors (878079917).

2634239739 is an equidigital number, since it uses as much as digits as its factorization.

2634239739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878079916.

The product of its digits is 1469664, while the sum is 48.

The square root of 2634239739 is about 51324.8452408772. The cubic root of 2634239739 is about 1381.0787160127.

The spelling of 2634239739 in words is "two billion, six hundred thirty-four million, two hundred thirty-nine thousand, seven hundred thirty-nine".