396169216 has 39 divisors (see below), whose sum is σ = 794797303. Its totient is φ = 197447680.

The previous prime is 396169177. The next prime is 396169217. The reversal of 396169216 is 612961693.

The square root of 396169216 is 19904.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396169217) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1273701 + ... + 1274011.

Almost surely, 2^396169216 is an apocalyptic number.

396169216 is the 19904-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396169216

396169216 is an abundant number, since it is smaller than the sum of its proper divisors (398628087).

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

396169216 is an frugal number, since it uses more digits than its factorization.

396169216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 313 counting only the distinct ones).

The product of its digits is 104976, while the sum is 43.

The cubic root of 396169216 is about 734.4466293096.

Multiplying 396169216 by its product of digits (104976), we get a square (41588259618816 = 6448896²).

The spelling of 396169216 in words is "three hundred ninety-six million, one hundred sixty-nine thousand, two hundred sixteen".