397449296 has 40 divisors (see below), whose sum is σ = 827863680. Its totient is φ = 184253184.

The previous prime is 397449251. The next prime is 397449359. The reversal of 397449296 is 692944793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380 + ... + 28196.

It is an arithmetic number, because the mean of its divisors is an integer number (20696592).

Almost surely, 2^397449296 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 397449296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413931840).

397449296 is an abundant number, since it is smaller than the sum of its proper divisors (430414384).

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

397449296 is a wasteful number, since it uses less digits than its factorization.

397449296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27891 (or 27885 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 53.

The square root of 397449296 is about 19936.1304169089. The cubic root of 397449296 is about 735.2368132594.

The spelling of 397449296 in words is "three hundred ninety-seven million, four hundred forty-nine thousand, two hundred ninety-six".