397182623 has 2 divisors, whose sum is σ = 397182624. Its totient is φ = 397182622.

The previous prime is 397182619. The next prime is 397182661. The reversal of 397182623 is 326281793.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 397182623 - 2² = 397182619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397982623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198591311 + 198591312.

It is an arithmetic number, because the mean of its divisors is an integer number (198591312).

Almost surely, 2^397182623 is an apocalyptic number.

397182623 is a deficient number, since it is larger than the sum of its proper divisors (1).

397182623 is an equidigital number, since it uses as much as digits as its factorization.

397182623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 397182623 is about 19929.4411110799. The cubic root of 397182623 is about 735.0723380451.

The spelling of 397182623 in words is "three hundred ninety-seven million, one hundred eighty-two thousand, six hundred twenty-three".