397097101 has 4 divisors (see below), whose sum is σ = 420455772. Its totient is φ = 373738432.

The previous prime is 397097089. The next prime is 397097119. The reversal of 397097101 is 101790793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105575625 + 291521476 = 10275^2 + 17074^2 .

It is a cyclic number.

It is not a de Polignac number, because 397097101 - 2⁹ = 397096589 is a prime.

It is a super-2 number, since 2×397097101² = 315372215245208402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397097171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11679310 + ... + 11679343.

It is an arithmetic number, because the mean of its divisors is an integer number (105113943).

Almost surely, 2^397097101 is an apocalyptic number.

It is an amenable number.

397097101 is a deficient number, since it is larger than the sum of its proper divisors (23358671).

397097101 is a wasteful number, since it uses less digits than its factorization.

397097101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23358670.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 397097101 is about 19927.2953759410. The cubic root of 397097101 is about 735.0195752727.

The spelling of 397097101 in words is "three hundred ninety-seven million, ninety-seven thousand, one hundred one".