397349400 has 192 divisors, whose sum is σ = 1424908800. Its totient is φ = 89717760.

The previous prime is 397349399. The next prime is 397349419. The reversal of 397349400 is 4943793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 373269 + ... + 374331.

It is an arithmetic number, because the mean of its divisors is an integer number (7421400).

Almost surely, 2^397349400 is an apocalyptic number.

397349400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397349400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (712454400).

397349400 is an abundant number, since it is smaller than the sum of its proper divisors (1027559400).

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

397349400 is a wasteful number, since it uses less digits than its factorization.

397349400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1169 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 397349400 is about 19933.6248585148. The cubic root of 397349400 is about 735.1752092831.

The spelling of 397349400 in words is "three hundred ninety-seven million, three hundred forty-nine thousand, four hundred".