853323397 has 2 divisors, whose sum is σ = 853323398. Its totient is φ = 853323396.

The previous prime is 853323337. The next prime is 853323409. The reversal of 853323397 is 793323358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 820306881 + 33016516 = 28641^2 + 5746^2 .

It is a cyclic number.

It is not a de Polignac number, because 853323397 - 2²⁷ = 719105669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (853323337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 426661698 + 426661699.

It is an arithmetic number, because the mean of its divisors is an integer number (426661699).

Almost surely, 2^853323397 is an apocalyptic number.

It is an amenable number.

853323397 is a deficient number, since it is larger than the sum of its proper divisors (1).

853323397 is an equidigital number, since it uses as much as digits as its factorization.

853323397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 43.

The square root of 853323397 is about 29211.6996595542. The cubic root of 853323397 is about 948.5011996750.

The spelling of 853323397 in words is "eight hundred fifty-three million, three hundred twenty-three thousand, three hundred ninety-seven".