397940085759 has 8 divisors (see below), whose sum is σ = 530590764160. Its totient is φ = 265291398936.

The previous prime is 397940085733. The next prime is 397940085769. The reversal of 397940085759 is 957580049793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 397940085759 - 2²¹ = 397937988607 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397940085759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397940085769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56532 + ... + 893910.

It is an arithmetic number, because the mean of its divisors is an integer number (66323845520).

Almost surely, 2^397940085759 is an apocalyptic number.

397940085759 is a deficient number, since it is larger than the sum of its proper divisors (132650678401).

397940085759 is a wasteful number, since it uses less digits than its factorization.

397940085759 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995789.

The product of its (nonzero) digits is 85730400, while the sum is 66.

The spelling of 397940085759 in words is "three hundred ninety-seven billion, nine hundred forty million, eighty-five thousand, seven hundred fifty-nine".