7956808397 has 2 divisors, whose sum is σ = 7956808398. Its totient is φ = 7956808396.

The previous prime is 7956808373. The next prime is 7956808399. The reversal of 7956808397 is 7938086597.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7408733476 + 548074921 = 86074^2 + 23411^2 .

It is a cyclic number.

It is not a de Polignac number, because 7956808397 - 2¹² = 7956804301 is a prime.

Together with 7956808399, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7956808399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3978404198 + 3978404199.

It is an arithmetic number, because the mean of its divisors is an integer number (3978404199).

Almost surely, 2^7956808397 is an apocalyptic number.

It is an amenable number.

7956808397 is a deficient number, since it is larger than the sum of its proper divisors (1).

7956808397 is an equidigital number, since it uses as much as digits as its factorization.

7956808397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22861440, while the sum is 62.

The square root of 7956808397 is about 89200.9439243778. The cubic root of 7956808397 is about 1996.3942027700.

The spelling of 7956808397 in words is "seven billion, nine hundred fifty-six million, eight hundred eight thousand, three hundred ninety-seven".