397431416284 has 48 divisors (see below), whose sum is σ = 822712665600. Its totient is φ = 164366225856.

The previous prime is 397431416281. The next prime is 397431416293. The reversal of 397431416284 is 482614134793.

It is a happy number.

It is a super-2 number, since 2×397431416284² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397431416281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395507 + ... + 1655989.

It is an arithmetic number, because the mean of its divisors is an integer number (17139847200).

Almost surely, 2^397431416284 is an apocalyptic number.

It is an amenable number.

397431416284 is an abundant number, since it is smaller than the sum of its proper divisors (425281249316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397431416284 is a wasteful number, since it uses less digits than its factorization.

397431416284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262402 (or 262400 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The spelling of 397431416284 in words is "three hundred ninety-seven billion, four hundred thirty-one million, four hundred sixteen thousand, two hundred eighty-four".