397039700 has 72 divisors (see below), whose sum is σ = 881969592. Its totient is φ = 155105280.

The previous prime is 397039679. The next prime is 397039729. The reversal of 397039700 is 7930793.

It can be written as a sum of positive squares in 12 ways, for example, as 51897616 + 345142084 = 7204^2 + 18578^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999902 + ... + 1000298.

Almost surely, 2^397039700 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 397039700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440984796).

397039700 is an abundant number, since it is smaller than the sum of its proper divisors (484929892).

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

397039700 is a wasteful number, since it uses less digits than its factorization.

397039700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 35721, while the sum is 38.

The square root of 397039700 is about 19925.8550632087. The cubic root of 397039700 is about 734.9841574940.

The spelling of 397039700 in words is "three hundred ninety-seven million, thirty-nine thousand, seven hundred".