7899340731 has 16 divisors (see below), whose sum is σ = 11140947456. Its totient is φ = 4968254016.

The previous prime is 7899340723. The next prime is 7899340753. The reversal of 7899340731 is 1370439987.

It is not a de Polignac number, because 7899340731 - 2³ = 7899340723 is a prime.

It is a super-2 number, since 2×7899340731² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7899340721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779095 + ... + 789168.

It is an arithmetic number, because the mean of its divisors is an integer number (696309216).

Almost surely, 2^7899340731 is an apocalyptic number.

7899340731 is a deficient number, since it is larger than the sum of its proper divisors (3241606725).

7899340731 is a wasteful number, since it uses less digits than its factorization.

7899340731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568362.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The square root of 7899340731 is about 88878.2354179019. The cubic root of 7899340731 is about 1991.5762980171.

The spelling of 7899340731 in words is "seven billion, eight hundred ninety-nine million, three hundred forty thousand, seven hundred thirty-one".