4380390 has 96 divisors (see below), whose sum is σ = 13815360. Its totient is φ = 940032.

The previous prime is 4380361. The next prime is 4380391. The reversal of 4380390 is 930834.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4380391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10506 + ... + 10914.

It is an arithmetic number, because the mean of its divisors is an integer number (143910).

Almost surely, 2^4380390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4380390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6907680).

4380390 is an abundant number, since it is smaller than the sum of its proper divisors (9434970).

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

4380390 is a wasteful number, since it uses less digits than its factorization.

4380390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 4380390 is about 2092.9381261757. The cubic root of 4380390 is about 163.6204538404.

The spelling of 4380390 in words is "four million, three hundred eighty thousand, three hundred ninety".