397796471 has 2 divisors, whose sum is σ = 397796472. Its totient is φ = 397796470.

The previous prime is 397796461. The next prime is 397796527. The reversal of 397796471 is 174697793.

It is a weak prime.

It is an emirp because it is prime and its reverse (174697793) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397796471 is a prime.

It is a super-3 number, since 3×397796471³ (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 (397796461) 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 as a sum of consecutive naturals, namely, 198898235 + 198898236.

It is an arithmetic number, because the mean of its divisors is an integer number (198898236).

Almost surely, 2^397796471 is an apocalyptic number.

397796471 is a deficient number, since it is larger than the sum of its proper divisors (1).

397796471 is an equidigital number, since it uses as much as digits as its factorization.

397796471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2000376, while the sum is 53.

The square root of 397796471 is about 19944.8356974932. The cubic root of 397796471 is about 735.4508292833.

The spelling of 397796471 in words is "three hundred ninety-seven million, seven hundred ninety-six thousand, four hundred seventy-one".