397869366 has 8 divisors (see below), whose sum is σ = 795738744. Its totient is φ = 132623120.

The previous prime is 397869361. The next prime is 397869397. The reversal of 397869366 is 663968793.

It is a sphenic number, since it is the product of 3 distinct primes.

397869366 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397869361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33155775 + ... + 33155786.

It is an arithmetic number, because the mean of its divisors is an integer number (99467343).

Almost surely, 2^397869366 is an apocalyptic number.

397869366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

397869366 is a wasteful number, since it uses less digits than its factorization.

397869366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66311566.

The product of its digits is 8817984, while the sum is 57.

The square root of 397869366 is about 19946.6630291886. The cubic root of 397869366 is about 735.4957495861.

The spelling of 397869366 in words is "three hundred ninety-seven million, eight hundred sixty-nine thousand, three hundred sixty-six".