397339797 has 8 divisors (see below), whose sum is σ = 532298080. Its totient is φ = 263637360.

The previous prime is 397339751. The next prime is 397339801. The reversal of 397339797 is 797933793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 397339797 - 2¹⁶ = 397274261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397339717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313222 + ... + 314487.

It is an arithmetic number, because the mean of its divisors is an integer number (66537260).

Almost surely, 2^397339797 is an apocalyptic number.

It is an amenable number.

397339797 is a deficient number, since it is larger than the sum of its proper divisors (134958283).

397339797 is a wasteful number, since it uses less digits than its factorization.

397339797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627923.

The product of its digits is 6751269, while the sum is 57.

The square root of 397339797 is about 19933.3839826558. The cubic root of 397339797 is about 735.1692867504.

The spelling of 397339797 in words is "three hundred ninety-seven million, three hundred thirty-nine thousand, seven hundred ninety-seven".