397855558792 has 16 divisors (see below), whose sum is σ = 746033276700. Its totient is φ = 198913351680.

The previous prime is 397855558777. The next prime is 397855558799. The reversal of 397855558792 is 297855558793.

It can be written as a sum of positive squares in 2 ways, for example, as 397815287076 + 40271716 = 630726^2 + 6346^2 .

It is not an unprimeable number, because it can be changed into a prime (397855558799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685817 + ... + 1907272.

Almost surely, 2^397855558792 is an apocalyptic number.

It is an amenable number.

397855558792 is a deficient number, since it is larger than the sum of its proper divisors (348177717908).

397855558792 is a wasteful number, since it uses less digits than its factorization.

397855558792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3606936 (or 3606932 counting only the distinct ones).

The product of its digits is 952560000, while the sum is 73.

Subtracting from 397855558792 its reverse (297855558793), we obtain a palindrome (99999999999).

The spelling of 397855558792 in words is "three hundred ninety-seven billion, eight hundred fifty-five million, five hundred fifty-eight thousand, seven hundred ninety-two".