397897023 has 16 divisors (see below), whose sum is σ = 559185120. Its totient is φ = 251282304.

The previous prime is 397897013. The next prime is 397897037. The reversal of 397897023 is 320798793.

It is not a de Polignac number, because 397897023 - 2⁶ = 397896959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397897013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38536 + ... + 47757.

It is an arithmetic number, because the mean of its divisors is an integer number (34949070).

Almost surely, 2^397897023 is an apocalyptic number.

397897023 is a deficient number, since it is larger than the sum of its proper divisors (161288097).

397897023 is a wasteful number, since it uses less digits than its factorization.

397897023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86378.

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 397897023 is about 19947.3562909976. The cubic root of 397897023 is about 735.5127913058.

The spelling of 397897023 in words is "three hundred ninety-seven million, eight hundred ninety-seven thousand, twenty-three".