397220323298 has 6 divisors (see below), whose sum is σ = 595831821921. Its totient is φ = 198609715992.

The previous prime is 397220323289. The next prime is 397220323349. The reversal of 397220323298 is 892323022793.

It can be written as a sum of positive squares in 2 ways, for example, as 278538006289 + 118682317009 = 527767^2 + 344503^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=445657.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 668486 + ... + 1114142.

Almost surely, 2^397220323298 is an apocalyptic number.

397220323298 is a deficient number, since it is larger than the sum of its proper divisors (198611498623).

397220323298 is an frugal number, since it uses more digits than its factorization.

397220323298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891316 (or 445659 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 50.

Multiplying 397220323298 by its sum of digits (50), we get a square (19861016164900 = 4456570²).

The spelling of 397220323298 in words is "three hundred ninety-seven billion, two hundred twenty million, three hundred twenty-three thousand, two hundred ninety-eight".