4219749 has 16 divisors (see below), whose sum is σ = 6283200. Its totient is φ = 2798928.

The previous prime is 4219711. The next prime is 4219753. The reversal of 4219749 is 9479124.

It is not a de Polignac number, because 4219749 - 2¹¹ = 4217701 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4219769) 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, 9862 + ... + 10280.

It is an arithmetic number, because the mean of its divisors is an integer number (392700).

Almost surely, 2^4219749 is an apocalyptic number.

It is an amenable number.

4219749 is a deficient number, since it is larger than the sum of its proper divisors (2063451).

4219749 is a wasteful number, since it uses less digits than its factorization.

4219749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 795 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 4219749 is about 2054.2027650648. The cubic root of 4219749 is about 161.5953549992.

It can be divided in two parts, 42 and 19749, that added together give a palindrome (19791).

The spelling of 4219749 in words is "four million, two hundred nineteen thousand, seven hundred forty-nine".