397837123 has 2 divisors, whose sum is σ = 397837124. Its totient is φ = 397837122.

The previous prime is 397837117. The next prime is 397837151. The reversal of 397837123 is 321738793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397837123 - 2⁵ = 397837091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397837123.

It is not a weakly prime, because it can be changed into another prime (397837103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198918561 + 198918562.

It is an arithmetic number, because the mean of its divisors is an integer number (198918562).

Almost surely, 2^397837123 is an apocalyptic number.

397837123 is a deficient number, since it is larger than the sum of its proper divisors (1).

397837123 is an equidigital number, since it uses as much as digits as its factorization.

397837123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 43.

The square root of 397837123 is about 19945.8547823852. The cubic root of 397837123 is about 735.4758810630.

The spelling of 397837123 in words is "three hundred ninety-seven million, eight hundred thirty-seven thousand, one hundred twenty-three".