7900399339 has 4 divisors (see below), whose sum is σ = 9029027824. Its totient is φ = 6771770856.

The previous prime is 7900399337. The next prime is 7900399349. The reversal of 7900399339 is 9339930097.

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

It is a cyclic number.

It is not a de Polignac number, because 7900399339 - 2¹ = 7900399337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7900399337) 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, 564314232 + ... + 564314245.

It is an arithmetic number, because the mean of its divisors is an integer number (2257256956).

Almost surely, 2^7900399339 is an apocalyptic number.

7900399339 is a deficient number, since it is larger than the sum of its proper divisors (1128628485).

7900399339 is a wasteful number, since it uses less digits than its factorization.

7900399339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128628484.

The product of its (nonzero) digits is 1240029, while the sum is 52.

The square root of 7900399339 is about 88884.1906021538. The cubic root of 7900399339 is about 1991.6652592144.

The spelling of 7900399339 in words is "seven billion, nine hundred million, three hundred ninety-nine thousand, three hundred thirty-nine".