397759359891 has 8 divisors (see below), whose sum is σ = 533308639680. Its totient is φ = 263691493352.

The previous prime is 397759359889. The next prime is 397759359911. The reversal of 397759359891 is 198953957793.

397759359891 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 397759359891 - 2¹ = 397759359889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397759359871) 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, 370352685 + ... + 370353758.

It is an arithmetic number, because the mean of its divisors is an integer number (66663579960).

Almost surely, 2^397759359891 is an apocalyptic number.

397759359891 is a deficient number, since it is larger than the sum of its proper divisors (135549279789).

397759359891 is a wasteful number, since it uses less digits than its factorization.

397759359891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740706625.

The product of its digits is 578680200, while the sum is 75.

The spelling of 397759359891 in words is "three hundred ninety-seven billion, seven hundred fifty-nine million, three hundred fifty-nine thousand, eight hundred ninety-one".