397683366 has 16 divisors (see below), whose sum is σ = 796359600. Its totient is φ = 132395648.

The previous prime is 397683353. The next prime is 397683367. The reversal of 397683366 is 663386793.

It is a happy number.

It is a super-3 number, since 3×397683366³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 36111 + ... + 45818.

It is an arithmetic number, because the mean of its divisors is an integer number (49772475).

Almost surely, 2^397683366 is an apocalyptic number.

397683366 is an abundant number, since it is smaller than the sum of its proper divisors (398676234).

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

397683366 is a wasteful number, since it uses less digits than its factorization.

397683366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82743.

The product of its digits is 2939328, while the sum is 51.

The square root of 397683366 is about 19942.0000501454. Note that the first 4 decimals coincide. The cubic root of 397683366 is about 735.3811193879.

It can be divided in two parts, 39768 and 3366, that added together give a palindrome (43134).

The spelling of 397683366 in words is "three hundred ninety-seven million, six hundred eighty-three thousand, three hundred sixty-six".