397598123693 has 2 divisors, whose sum is σ = 397598123694. Its totient is φ = 397598123692.

The previous prime is 397598123677. The next prime is 397598123789. The reversal of 397598123693 is 396321895793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325268324329 + 72329799364 = 570323^2 + 268942^2 .

It is a cyclic number.

It is not a de Polignac number, because 397598123693 - 2⁴ = 397598123677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397598123633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198799061846 + 198799061847.

It is an arithmetic number, because the mean of its divisors is an integer number (198799061847).

Almost surely, 2^397598123693 is an apocalyptic number.

It is an amenable number.

397598123693 is a deficient number, since it is larger than the sum of its proper divisors (1).

397598123693 is an equidigital number, since it uses as much as digits as its factorization.

397598123693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 66134880, while the sum is 65.

The spelling of 397598123693 in words is "three hundred ninety-seven billion, five hundred ninety-eight million, one hundred twenty-three thousand, six hundred ninety-three".