397727283969 has 8 divisors (see below), whose sum is σ = 589225605920. Its totient is φ = 265151522628.

The previous prime is 397727283913. The next prime is 397727283971. The reversal of 397727283969 is 969382727793.

397727283969 is a `hidden beast` number, since 397 + 7 + 2 + 72 + 83 + 96 + 9 = 666.

It is not a de Polignac number, because 397727283969 - 2¹¹ = 397727281921 is a prime.

It is a super-2 number, since 2×397727283969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397727283897 and 397727283906.

It is not an unprimeable number, because it can be changed into a prime (397727983969) 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, 7365320047 + ... + 7365320100.

It is an arithmetic number, because the mean of its divisors is an integer number (73653200740).

Almost surely, 2^397727283969 is an apocalyptic number.

It is an amenable number.

397727283969 is a deficient number, since it is larger than the sum of its proper divisors (191498321951).

397727283969 is a wasteful number, since it uses less digits than its factorization.

397727283969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14730640156 (or 14730640150 counting only the distinct ones).

The product of its digits is 432081216, while the sum is 72.

The spelling of 397727283969 in words is "three hundred ninety-seven billion, seven hundred twenty-seven million, two hundred eighty-three thousand, nine hundred sixty-nine".