397715123 has 16 divisors (see below), whose sum is σ = 432579840. Its totient is φ = 363483936.

The previous prime is 397715117. The next prime is 397715141. The reversal of 397715123 is 321517793.

It is a cyclic number.

It is not a de Polignac number, because 397715123 - 2¹⁶ = 397649587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397715113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905738 + ... + 906176.

It is an arithmetic number, because the mean of its divisors is an integer number (27036240).

Almost surely, 2^397715123 is an apocalyptic number.

397715123 is a deficient number, since it is larger than the sum of its proper divisors (34864717).

397715123 is a wasteful number, since it uses less digits than its factorization.

397715123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986.

The product of its digits is 39690, while the sum is 38.

The square root of 397715123 is about 19942.7962683271. The cubic root of 397715123 is about 735.4006934835.

The spelling of 397715123 in words is "three hundred ninety-seven million, seven hundred fifteen thousand, one hundred twenty-three".