397018579 has 2 divisors, whose sum is σ = 397018580. Its totient is φ = 397018578.

The previous prime is 397018543. The next prime is 397018597. The reversal of 397018579 is 975810793.

Together with next prime (397018597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 397018579 - 2⁷ = 397018451 is a prime.

It is not a weakly prime, because it can be changed into another prime (397018079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198509289 + 198509290.

It is an arithmetic number, because the mean of its divisors is an integer number (198509290).

Almost surely, 2^397018579 is an apocalyptic number.

397018579 is a deficient number, since it is larger than the sum of its proper divisors (1).

397018579 is an equidigital number, since it uses as much as digits as its factorization.

397018579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The square root of 397018579 is about 19925.3250663571. The cubic root of 397018579 is about 734.9711244768.

The spelling of 397018579 in words is "three hundred ninety-seven million, eighteen thousand, five hundred seventy-nine".