397894464 has 224 divisors, whose sum is σ = 1294058880. Its totient is φ = 119877120.

The previous prime is 397894439. The next prime is 397894477. The reversal of 397894464 is 464498793.

It is a happy number.

397894464 is a `hidden beast` number, since 3 + 97 + 8 + 94 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (5225472) is a multiple of the sum of its prime divisors (189).

It is a self number, because there is not a number n which added to its sum of digits gives 397894464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2299882 + ... + 2300054.

Almost surely, 2^397894464 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 397894464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647029440).

397894464 is an abundant number, since it is smaller than the sum of its proper divisors (896164416).

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

397894464 is a wasteful number, since it uses less digits than its factorization.

397894464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227 (or 189 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 397894464 is about 19947.2921470560. The cubic root of 397894464 is about 735.5112145316.

It can be divided in two parts, 39789 and 4464, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 397894464 in words is "three hundred ninety-seven million, eight hundred ninety-four thousand, four hundred sixty-four".