397805744 has 40 divisors (see below), whose sum is σ = 899609088. Its totient is φ = 166858560.

The previous prime is 397805743. The next prime is 397805761. The reversal of 397805744 is 447508793.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is not an unprimeable number, because it can be changed into a prime (397805743) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32522 + ... + 43049.

Almost surely, 2^397805744 is an apocalyptic number.

It is an amenable number.

397805744 is an abundant number, since it is smaller than the sum of its proper divisors (501803344).

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

397805744 is a wasteful number, since it uses less digits than its factorization.

397805744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75633 (or 75627 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 397805744 is about 19945.0681623303. The cubic root of 397805744 is about 735.4565439163.

The spelling of 397805744 in words is "three hundred ninety-seven million, eight hundred five thousand, seven hundred forty-four".