397045766 has 8 divisors (see below), whose sum is σ = 641381664. Its totient is φ = 183251880.

The previous prime is 397045741. The next prime is 397045777. The reversal of 397045766 is 667540793.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 397045766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7635470 + ... + 7635521.

It is an arithmetic number, because the mean of its divisors is an integer number (80172708).

Almost surely, 2^397045766 is an apocalyptic number.

397045766 is a deficient number, since it is larger than the sum of its proper divisors (244335898).

397045766 is a wasteful number, since it uses less digits than its factorization.

397045766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15271006.

The product of its (nonzero) digits is 952560, while the sum is 47.

The square root of 397045766 is about 19926.0072769233. The cubic root of 397045766 is about 734.9879005212.

The spelling of 397045766 in words is "three hundred ninety-seven million, forty-five thousand, seven hundred sixty-six".