4449816 has 112 divisors (see below), whose sum is σ = 14427600. Its totient is φ = 1259712.

The previous prime is 4449811. The next prime is 4449817. The reversal of 4449816 is 6189444.

4449816 = T₈₃ + T₈₄ + ... + T₃₀₀.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4449811) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 40770 + ... + 40878.

Almost surely, 2^4449816 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 4449816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7213800).

4449816 is an abundant number, since it is smaller than the sum of its proper divisors (9977784).

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

4449816 is a wasteful number, since it uses less digits than its factorization.

4449816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 121 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 4449816 is about 2109.4586983395. The cubic root of 4449816 is about 164.4803485978.

The spelling of 4449816 in words is "four million, four hundred forty-nine thousand, eight hundred sixteen".