397576261 has 8 divisors (see below), whose sum is σ = 403747200. Its totient is φ = 391443360.

The previous prime is 397576259. The next prime is 397576313. The reversal of 397576261 is 162675793.

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

It is not a de Polignac number, because 397576261 - 2¹ = 397576259 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 (397576661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11926 + ... + 30616.

It is an arithmetic number, because the mean of its divisors is an integer number (50468400).

Almost surely, 2^397576261 is an apocalyptic number.

It is an amenable number.

397576261 is a deficient number, since it is larger than the sum of its proper divisors (6170939).

397576261 is a wasteful number, since it uses less digits than its factorization.

397576261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19019.

The product of its digits is 476280, while the sum is 46.

The square root of 397576261 is about 19939.3144566206. The cubic root of 397576261 is about 735.3150952814.

The spelling of 397576261 in words is "three hundred ninety-seven million, five hundred seventy-six thousand, two hundred sixty-one".