397227471 has 32 divisors (see below), whose sum is σ = 586656000. Its totient is φ = 238065408.

The previous prime is 397227461. The next prime is 397227497. The reversal of 397227471 is 174722793.

It is a happy number.

It is not a de Polignac number, because 397227471 - 2⁷ = 397227343 is a prime.

It is a super-3 number, since 3×397227471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397227461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95491 + ... + 99563.

It is an arithmetic number, because the mean of its divisors is an integer number (18333000).

Almost surely, 2^397227471 is an apocalyptic number.

397227471 is a deficient number, since it is larger than the sum of its proper divisors (189428529).

397227471 is a wasteful number, since it uses less digits than its factorization.

397227471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4183.

The product of its digits is 148176, while the sum is 42.

The square root of 397227471 is about 19930.5662488550. The cubic root of 397227471 is about 735.1000039781.

The spelling of 397227471 in words is "three hundred ninety-seven million, two hundred twenty-seven thousand, four hundred seventy-one".