397784432 has 40 divisors (see below), whose sum is σ = 785440800. Its totient is φ = 195126272.

The previous prime is 397784393. The next prime is 397784459. The reversal of 397784432 is 234487793.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194069 + ... + 196107.

It is an arithmetic number, because the mean of its divisors is an integer number (19636020).

Almost surely, 2^397784432 is an apocalyptic number.

It is an amenable number.

397784432 is a deficient number, since it is larger than the sum of its proper divisors (387656368).

397784432 is a wasteful number, since it uses less digits than its factorization.

397784432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273 (or 2267 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 47.

The square root of 397784432 is about 19944.5338877598. The cubic root of 397784432 is about 735.4434099265.

The spelling of 397784432 in words is "three hundred ninety-seven million, seven hundred eighty-four thousand, four hundred thirty-two".