4420845 has 64 divisors (see below), whose sum is σ = 9273600. Its totient is φ = 1969920.

The previous prime is 4420837. The next prime is 4420849. The reversal of 4420845 is 5480244.

It is not a de Polignac number, because 4420845 - 2³ = 4420837 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4420849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19191 + ... + 19419.

It is an arithmetic number, because the mean of its divisors is an integer number (144900).

Almost surely, 2^4420845 is an apocalyptic number.

4420845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4420845 is an abundant number, since it is smaller than the sum of its proper divisors (4852755).

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

4420845 is a wasteful number, since it uses less digits than its factorization.

4420845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 4420845 is about 2102.5805573152. The cubic root of 4420845 is about 164.1226155209.

It can be divided in two parts, 44208 and 45, that added together give a triangular number (44253 = T₂₉₇).

The spelling of 4420845 in words is "four million, four hundred twenty thousand, eight hundred forty-five".