7926397693 has 4 divisors (see below), whose sum is σ = 8119724508.
Its totient is φ = 7733070880.
The previous prime is 7926397649. The next prime is 7926397709. The reversal of 7926397693 is 3967936297.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 712783204 + 7213614489 = 26698^2 + 84933^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-7926397693 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 (7926397603) 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, 96663346 + ... + 96663427.
It is an arithmetic number, because the mean of its divisors is an integer number (2029931127).
Almost surely, 27926397693 is an apocalyptic number.
It is an amenable number.
7926397693 is a deficient number, since it is larger than the sum of its proper divisors (193326815).
7926397693 is a wasteful number, since it uses less digits than its factorization.
7926397693 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 193326814.
The product of its digits is 23147208, while the sum is 61.
The square root of 7926397693 is about 89030.3189537137.
The cubic root of 7926397693 is about 1993.8475676116.
The spelling of 7926397693 in words is "seven billion, nine hundred twenty-six million, three hundred ninety-seven thousand, six hundred ninety-three".