397683364 has 45 divisors (see below), whose sum is σ = 766934567.
Its totient is φ = 180435216.
The previous prime is 397683353. The next prime is 397683367. The reversal of 397683364 is 463386793.
Multipling 397683364 by its sum of digits (49), we get a square (19486484836 = 1395942).
The square root of 397683364 is 19942.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in 2 ways, for example, as 197177764 + 200505600 = 14042^2 + 14160^2
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (397683367) by changing a digit.
It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 6740367 + ... + 6740425.
Almost surely, 2397683364 is an apocalyptic number.
397683364 is the 19942-nd square number.
It is an amenable number.
397683364 is a deficient number, since it is larger than the sum of its proper divisors (369251203).
397683364 is an frugal number, since it uses more digits than its factorization.
397683364 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 174 (or 74 counting only the distinct ones).
The product of its digits is 1959552, while the sum is 49.
The cubic root of 397683364 is about 735.3811181551.
The spelling of 397683364 in words is "three hundred ninety-seven million, six hundred eighty-three thousand, three hundred sixty-four".