4390540 has 48 divisors (see below), whose sum is σ = 11499264. Its totient is φ = 1368000.

The previous prime is 4390523. The next prime is 4390541. The reversal of 4390540 is 450934.

It is not an unprimeable number, because it can be changed into a prime (4390541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115 + ... + 2965.

It is an arithmetic number, because the mean of its divisors is an integer number (239568).

Almost surely, 2^4390540 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 4390540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5749632).

4390540 is an abundant number, since it is smaller than the sum of its proper divisors (7108724).

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

4390540 is a wasteful number, since it uses less digits than its factorization.

4390540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2878 (or 2876 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 4390540 is about 2095.3615439823. The cubic root of 4390540 is about 163.7467338082.

The spelling of 4390540 in words is "four million, three hundred ninety thousand, five hundred forty".