397447446 has 32 divisors (see below), whose sum is σ = 869500800. Its totient is φ = 120113280.

The previous prime is 397447433. The next prime is 397447469. The reversal of 397447446 is 644744793.

It is a junction number, because it is equal to n+sod(n) for n = 397447395 and 397447404.

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 15 ways as a sum of consecutive naturals, for example, 17070 + ... + 32958.

It is an arithmetic number, because the mean of its divisors is an integer number (27171900).

Almost surely, 2^397447446 is an apocalyptic number.

397447446 is an abundant number, since it is smaller than the sum of its proper divisors (472053354).

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

397447446 is a wasteful number, since it uses less digits than its factorization.

397447446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16284.

The product of its digits is 2032128, while the sum is 48.

The square root of 397447446 is about 19936.0840186833. The cubic root of 397447446 is about 735.2356724932.

The spelling of 397447446 in words is "three hundred ninety-seven million, four hundred forty-seven thousand, four hundred forty-six".