397203456 has 96 divisors (see below), whose sum is σ = 1140637680. Its totient is φ = 122191872.

The previous prime is 397203451. The next prime is 397203463. The reversal of 397203456 is 654302793.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397203451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77386 + ... + 82358.

Almost surely, 2^397203456 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 397203456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570318840).

397203456 is an abundant number, since it is smaller than the sum of its proper divisors (743434224).

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

397203456 is a wasteful number, since it uses less digits than its factorization.

397203456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011 (or 4991 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 39.

The square root of 397203456 is about 19929.9637731733. The cubic root of 397203456 is about 735.0851898111.

The spelling of 397203456 in words is "three hundred ninety-seven million, two hundred three thousand, four hundred fifty-six".