397447736 has 32 divisors (see below), whose sum is σ = 862464000. Its totient is φ = 168176736.

The previous prime is 397447711. The next prime is 397447837. The reversal of 397447736 is 637744793.

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 7 ways as a sum of consecutive naturals, for example, 40496 + ... + 49343.

It is an arithmetic number, because the mean of its divisors is an integer number (26952000).

Almost surely, 2^397447736 is an apocalyptic number.

It is an amenable number.

397447736 is an abundant number, since it is smaller than the sum of its proper divisors (465016264).

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

397447736 is a wasteful number, since it uses less digits than its factorization.

397447736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89931 (or 89927 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 50.

The square root of 397447736 is about 19936.0912919258. The cubic root of 397447736 is about 735.2358513162.

The spelling of 397447736 in words is "three hundred ninety-seven million, four hundred forty-seven thousand, seven hundred thirty-six".