397563526428 has 24 divisors (see below), whose sum is σ = 927856486032. Its totient is φ = 132491424384.

The previous prime is 397563526421. The next prime is 397563526483. The reversal of 397563526428 is 824625365793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397563526421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3663175 + ... + 3770142.

It is an arithmetic number, because the mean of its divisors is an integer number (38660686918).

Almost surely, 2^397563526428 is an apocalyptic number.

It is an amenable number.

397563526428 is an abundant number, since it is smaller than the sum of its proper divisors (530292959604).

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

397563526428 is a wasteful number, since it uses less digits than its factorization.

397563526428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437781 (or 7437779 counting only the distinct ones).

The product of its digits is 65318400, while the sum is 60.

The spelling of 397563526428 in words is "three hundred ninety-seven billion, five hundred sixty-three million, five hundred twenty-six thousand, four hundred twenty-eight".