7993913129 has 4 divisors (see below), whose sum is σ = 8011031184. Its totient is φ = 7976795076.

The previous prime is 7993913093. The next prime is 7993913201. The reversal of 7993913129 is 9213193997.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7993913129 - 2²⁸ = 7725477673 is a prime.

It is a super-2 number, since 2×7993913129² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7993913329) 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, 8558327 + ... + 8559260.

It is an arithmetic number, because the mean of its divisors is an integer number (2002757796).

Almost surely, 2^7993913129 is an apocalyptic number.

It is an amenable number.

7993913129 is a deficient number, since it is larger than the sum of its proper divisors (17118055).

7993913129 is a wasteful number, since it uses less digits than its factorization.

7993913129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17118054.

The product of its digits is 826686, while the sum is 53.

The square root of 7993913129 is about 89408.6859818441. The cubic root of 7993913129 is about 1999.4926320498.

The spelling of 7993913129 in words is "seven billion, nine hundred ninety-three million, nine hundred thirteen thousand, one hundred twenty-nine".