397710222 has 64 divisors (see below), whose sum is σ = 1010601984. Its totient is φ = 101502720.

The previous prime is 397710197. The next prime is 397710239. The reversal of 397710222 is 222017793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5178 + ... + 28674.

It is an arithmetic number, because the mean of its divisors is an integer number (15790656).

Almost surely, 2^397710222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397710222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (505300992).

397710222 is an abundant number, since it is smaller than the sum of its proper divisors (612891762).

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

397710222 is a wasteful number, since it uses less digits than its factorization.

397710222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23553.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 397710222 is about 19942.6733914989. The cubic root of 397710222 is about 735.3976727169.

The spelling of 397710222 in words is "three hundred ninety-seven million, seven hundred ten thousand, two hundred twenty-two".