397035109 has 2 divisors, whose sum is σ = 397035110. Its totient is φ = 397035108.

The previous prime is 397035097. The next prime is 397035127. The reversal of 397035109 is 901530793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234396100 + 162639009 = 15310^2 + 12753^2 .

It is a cyclic number.

It is not a de Polignac number, because 397035109 - 2⁹ = 397034597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397035409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198517554 + 198517555.

It is an arithmetic number, because the mean of its divisors is an integer number (198517555).

Almost surely, 2^397035109 is an apocalyptic number.

It is an amenable number.

397035109 is a deficient number, since it is larger than the sum of its proper divisors (1).

397035109 is an equidigital number, since it uses as much as digits as its factorization.

397035109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 397035109 is about 19925.7398607931. The cubic root of 397035109 is about 734.9813245907.

The spelling of 397035109 in words is "three hundred ninety-seven million, thirty-five thousand, one hundred nine".