397970471 has 2 divisors, whose sum is σ = 397970472. Its totient is φ = 397970470.

The previous prime is 397970453. The next prime is 397970491. The reversal of 397970471 is 174079793.

It is a weak prime.

It is an emirp because it is prime and its reverse (174079793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 397970471 - 2¹⁴ = 397954087 is a prime.

It is a super-3 number, since 3×397970471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397970431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198985235 + 198985236.

It is an arithmetic number, because the mean of its divisors is an integer number (198985236).

Almost surely, 2^397970471 is an apocalyptic number.

397970471 is a deficient number, since it is larger than the sum of its proper divisors (1).

397970471 is an equidigital number, since it uses as much as digits as its factorization.

397970471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 397970471 is about 19949.1972520199. The cubic root of 397970471 is about 735.5580447397.

The spelling of 397970471 in words is "three hundred ninety-seven million, nine hundred seventy thousand, four hundred seventy-one".