397399269665 has 16 divisors (see below), whose sum is σ = 504879652800. Its totient is φ = 299445838272.

The previous prime is 397399269653. The next prime is 397399269667. The reversal of 397399269665 is 566962993793.

It is a cyclic number.

It is not a de Polignac number, because 397399269665 - 2²⁰ = 397398221089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 397399269592 and 397399269601.

It is not an unprimeable number, because it can be changed into a prime (397399269667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12073595 + ... + 12106464.

It is an arithmetic number, because the mean of its divisors is an integer number (31554978300).

Almost surely, 2^397399269665 is an apocalyptic number.

It is an amenable number.

397399269665 is a deficient number, since it is larger than the sum of its proper divisors (107480383135).

397399269665 is a wasteful number, since it uses less digits than its factorization.

397399269665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24180256.

The product of its digits is 892820880, while the sum is 74.

The spelling of 397399269665 in words is "three hundred ninety-seven billion, three hundred ninety-nine million, two hundred sixty-nine thousand, six hundred sixty-five".