7913617397 has 4 divisors (see below), whose sum is σ = 9044134176. Its totient is φ = 6783100620.

The previous prime is 7913617381. The next prime is 7913617409. The reversal of 7913617397 is 7937163197.

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 7913617397 - 2⁴ = 7913617381 is a prime.

It is a super-2 number, since 2×7913617397² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7913317397) 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, 565258379 + ... + 565258392.

It is an arithmetic number, because the mean of its divisors is an integer number (2261033544).

Almost surely, 2^7913617397 is an apocalyptic number.

It is an amenable number.

7913617397 is a deficient number, since it is larger than the sum of its proper divisors (1130516779).

7913617397 is a wasteful number, since it uses less digits than its factorization.

7913617397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130516778.

The product of its digits is 1500282, while the sum is 53.

The square root of 7913617397 is about 88958.5150336942. The cubic root of 7913617397 is about 1992.7753836333.

The spelling of 7913617397 in words is "seven billion, nine hundred thirteen million, six hundred seventeen thousand, three hundred ninety-seven".