397621422 has 24 divisors (see below), whose sum is σ = 939832920. Its totient is φ = 120491280.

The previous prime is 397621369. The next prime is 397621429. The reversal of 397621422 is 224126793.

397621422 is a `hidden beast` number, since 3 + 9 + 7 + 621 + 4 + 22 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397621429) 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 11 ways as a sum of consecutive naturals, for example, 1003897 + ... + 1004292.

It is an arithmetic number, because the mean of its divisors is an integer number (39159705).

Almost surely, 2^397621422 is an apocalyptic number.

397621422 is an abundant number, since it is smaller than the sum of its proper divisors (542211498).

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

397621422 is a wasteful number, since it uses less digits than its factorization.

397621422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008208 (or 2008205 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 397621422 is about 19940.4468856643. The cubic root of 397621422 is about 735.3429359005.

The spelling of 397621422 in words is "three hundred ninety-seven million, six hundred twenty-one thousand, four hundred twenty-two".