4034821 has 16 divisors (see below), whose sum is σ = 5068800. Its totient is φ = 3131568.

The previous prime is 4034803. The next prime is 4034827. The reversal of 4034821 is 1284304.

It is a cyclic number.

It is not a de Polignac number, because 4034821 - 2¹¹ = 4032773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4034792 and 4034801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4034827) 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, 2400 + ... + 3718.

It is an arithmetic number, because the mean of its divisors is an integer number (316800).

Almost surely, 2^4034821 is an apocalyptic number.

It is an amenable number.

4034821 is a deficient number, since it is larger than the sum of its proper divisors (1033979).

4034821 is a wasteful number, since it uses less digits than its factorization.

4034821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 4034821 is about 2008.6863866716. The cubic root of 4034821 is about 159.1993991080.

The spelling of 4034821 in words is "four million, thirty-four thousand, eight hundred twenty-one".