397434384 has 160 divisors (see below), whose sum is σ = 1199923200. Its totient is φ = 125781120.

The previous prime is 397434379. The next prime is 397434403. The reversal of 397434384 is 483434793.

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 31 ways as a sum of consecutive naturals, for example, 789877 + ... + 790379.

It is an arithmetic number, because the mean of its divisors is an integer number (7499520).

Almost surely, 2^397434384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397434384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599961600).

397434384 is an abundant number, since it is smaller than the sum of its proper divisors (802488816).

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

397434384 is a wasteful number, since it uses less digits than its factorization.

397434384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 598 counting only the distinct ones).

The product of its digits is 870912, while the sum is 45.

The square root of 397434384 is about 19935.7564190577. The cubic root of 397434384 is about 735.2276179662.

The spelling of 397434384 in words is "three hundred ninety-seven million, four hundred thirty-four thousand, three hundred eighty-four".