397899854622 has 24 divisors (see below), whose sum is σ = 862507775064. Its totient is φ = 132573065904.

The previous prime is 397899854593. The next prime is 397899854641. The reversal of 397899854622 is 226458998793.

397899854622 is a `hidden beast` number, since 3 + 9 + 7 + 89 + 9 + 85 + 462 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4977493 + ... + 5056800.

It is an arithmetic number, because the mean of its divisors is an integer number (35937823961).

Almost surely, 2^397899854622 is an apocalyptic number.

397899854622 is an abundant number, since it is smaller than the sum of its proper divisors (464607920442).

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

397899854622 is a wasteful number, since it uses less digits than its factorization.

397899854622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10036504 (or 10036501 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 72.

It can be divided in two parts, 397899 and 854622, that added together give a palindrome (1252521).

The spelling of 397899854622 in words is "three hundred ninety-seven billion, eight hundred ninety-nine million, eight hundred fifty-four thousand, six hundred twenty-two".