397354111647 has 8 divisors (see below), whose sum is σ = 541077939456. Its totient is φ = 259266512472.

The previous prime is 397354111631. The next prime is 397354111697. The reversal of 397354111647 is 746111453793.

It is a happy number.

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

It is not a de Polignac number, because 397354111647 - 2⁴ = 397354111631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397354111647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397354111697) 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, 1409056993 + ... + 1409057274.

It is an arithmetic number, because the mean of its divisors is an integer number (67634742432).

Almost surely, 2^397354111647 is an apocalyptic number.

397354111647 is a deficient number, since it is larger than the sum of its proper divisors (143723827809).

397354111647 is a wasteful number, since it uses less digits than its factorization.

397354111647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818114317.

The product of its digits is 1905120, while the sum is 51.

The spelling of 397354111647 in words is "three hundred ninety-seven billion, three hundred fifty-four million, one hundred eleven thousand, six hundred forty-seven".