397938800 has 180 divisors, whose sum is σ = 1130597280. Its totient is φ = 134184960.

The previous prime is 397938799. The next prime is 397938833. The reversal of 397938800 is 8839793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1548272 + ... + 1548528.

It is an arithmetic number, because the mean of its divisors is an integer number (6281096).

Almost surely, 2^397938800 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 397938800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565298640).

397938800 is an abundant number, since it is smaller than the sum of its proper divisors (732658480).

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

397938800 is a wasteful number, since it uses less digits than its factorization.

397938800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 397938800 is about 19948.4034448875. The cubic root of 397938800 is about 735.5385320048.

The spelling of 397938800 in words is "three hundred ninety-seven million, nine hundred thirty-eight thousand, eight hundred".