397321497 has 16 divisors (see below), whose sum is σ = 589128960. Its totient is φ = 264654000.

The previous prime is 397321453. The next prime is 397321499. The reversal of 397321497 is 794123793.

It is not a de Polignac number, because 397321497 - 2¹⁶ = 397255961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397321499) 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, 29472 + ... + 40782.

It is an arithmetic number, because the mean of its divisors is an integer number (36820560).

Almost surely, 2^397321497 is an apocalyptic number.

It is an amenable number.

397321497 is a deficient number, since it is larger than the sum of its proper divisors (191807463).

397321497 is a wasteful number, since it uses less digits than its factorization.

397321497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12621 (or 12615 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 397321497 is about 19932.9249484364. The cubic root of 397321497 is about 735.1580001853.

The spelling of 397321497 in words is "three hundred ninety-seven million, three hundred twenty-one thousand, four hundred ninety-seven".