4349821 has 8 divisors (see below), whose sum is σ = 4991744. Its totient is φ = 3713040.

The previous prime is 4349801. The next prime is 4349833. The reversal of 4349821 is 1289434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4349821 - 2⁷ = 4349693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4349801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751 + ... + 3043.

It is an arithmetic number, because the mean of its divisors is an integer number (623968).

Almost surely, 2^4349821 is an apocalyptic number.

It is an amenable number.

4349821 is a deficient number, since it is larger than the sum of its proper divisors (641923).

4349821 is a wasteful number, since it uses less digits than its factorization.

4349821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its digits is 6912, while the sum is 31.

The square root of 4349821 is about 2085.6224490545. The cubic root of 4349821 is about 163.2389509785.

The spelling of 4349821 in words is "four million, three hundred forty-nine thousand, eight hundred twenty-one".