4388890 has 32 divisors (see below), whose sum is σ = 9129024. Its totient is φ = 1501440.

The previous prime is 4388869. The next prime is 4388897. The reversal of 4388890 is 988834.

It is not an unprimeable number, because it can be changed into a prime (4388897) 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, 697 + ... + 3043.

It is an arithmetic number, because the mean of its divisors is an integer number (285282).

Almost surely, 2^4388890 is an apocalyptic number.

4388890 is an abundant number, since it is smaller than the sum of its proper divisors (4740134).

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

4388890 is a wasteful number, since it uses less digits than its factorization.

4388890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 4388890 is about 2094.9677801818. The cubic root of 4388890 is about 163.7262187946.

The spelling of 4388890 in words is "four million, three hundred eighty-eight thousand, eight hundred ninety".