7939669397 has 4 divisors (see below), whose sum is σ = 8661457536. Its totient is φ = 7217881260.

The previous prime is 7939669379. The next prime is 7939669411.

7939669397 is nontrivially palindromic in base 10.

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 7939669397 - 2⁸ = 7939669141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7939669357) 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, 360894053 + ... + 360894074.

It is an arithmetic number, because the mean of its divisors is an integer number (2165364384).

Almost surely, 2^7939669397 is an apocalyptic number.

It is an amenable number.

7939669397 is a deficient number, since it is larger than the sum of its proper divisors (721788139).

7939669397 is a wasteful number, since it uses less digits than its factorization.

7939669397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721788138.

The product of its digits is 104162436, while the sum is 68.

The square root of 7939669397 is about 89104.8225238118. The cubic root of 7939669397 is about 1994.9597584025.

The spelling of 7939669397 in words is "seven billion, nine hundred thirty-nine million, six hundred sixty-nine thousand, three hundred ninety-seven".