4219845 has 16 divisors (see below), whose sum is σ = 7716480. Its totient is φ = 1929024.

The previous prime is 4219823. The next prime is 4219847. The reversal of 4219845 is 5489124.

4219845 is nontrivially palindromic in base 14.

It is not a de Polignac number, because 4219845 - 2⁶ = 4219781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4219847) 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, 19990 + ... + 20199.

It is an arithmetic number, because the mean of its divisors is an integer number (482280).

Almost surely, 2^4219845 is an apocalyptic number.

It is an amenable number.

4219845 is a deficient number, since it is larger than the sum of its proper divisors (3496635).

4219845 is a wasteful number, since it uses less digits than its factorization.

4219845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40204.

The product of its digits is 11520, while the sum is 33.

The square root of 4219845 is about 2054.2261316613. The cubic root of 4219845 is about 161.5965804304.

The spelling of 4219845 in words is "four million, two hundred nineteen thousand, eight hundred forty-five".