397811270 has 16 divisors (see below), whose sum is σ = 740752560. Its totient is φ = 153637344.

The previous prime is 397811263. The next prime is 397811273. The reversal of 397811270 is 72118793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397811273) 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, 685592 + ... + 686171.

It is an arithmetic number, because the mean of its divisors is an integer number (46297035).

Almost surely, 2^397811270 is an apocalyptic number.

397811270 is a deficient number, since it is larger than the sum of its proper divisors (342941290).

397811270 is a wasteful number, since it uses less digits than its factorization.

397811270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371799.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 397811270 is about 19945.2066923359. The cubic root of 397811270 is about 735.4599493590.

The spelling of 397811270 in words is "three hundred ninety-seven million, eight hundred eleven thousand, two hundred seventy".