4489940 has 48 divisors (see below), whose sum is σ = 11609472. Its totient is φ = 1420416.

The previous prime is 4489937. The next prime is 4489943. The reversal of 4489940 is 499844.

It is an interprime number because it is at equal distance from previous prime (4489937) and next prime (4489943).

It is a super-2 number, since 2×4489940² = 40319122407200, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4489894 and 4489903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4489943) 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, 587 + ... + 3053.

It is an arithmetic number, because the mean of its divisors is an integer number (241864).

Almost surely, 2^4489940 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 4489940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5804736).

4489940 is an abundant number, since it is smaller than the sum of its proper divisors (7119532).

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

4489940 is a wasteful number, since it uses less digits than its factorization.

4489940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2496 (or 2494 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 4489940 is about 2118.9478521191. The cubic root of 4489940 is about 164.9732432891.

The spelling of 4489940 in words is "four million, four hundred eighty-nine thousand, nine hundred forty".