397444766 has 8 divisors (see below), whose sum is σ = 598794120. Its totient is φ = 197846728.

The previous prime is 397444763. The next prime is 397444771. The reversal of 397444766 is 667444793.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397444763) 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, 437261 + ... + 438168.

It is an arithmetic number, because the mean of its divisors is an integer number (74849265).

Almost surely, 2^397444766 is an apocalyptic number.

397444766 is a deficient number, since it is larger than the sum of its proper divisors (201349354).

397444766 is a wasteful number, since it uses less digits than its factorization.

397444766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875658.

The product of its digits is 3048192, while the sum is 50.

The square root of 397444766 is about 19936.0168037650. The cubic root of 397444766 is about 735.2340199174.

The spelling of 397444766 in words is "three hundred ninety-seven million, four hundred forty-four thousand, seven hundred sixty-six".