4036821 has 8 divisors (see below), whose sum is σ = 5450880. Its totient is φ = 2656992.

The previous prime is 4036801. The next prime is 4036841. The reversal of 4036821 is 1286304.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4036801) and next prime (4036841).

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

It is not a de Polignac number, because 4036821 - 2⁶ = 4036757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4036791 and 4036800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4036801) 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 7 ways as a sum of consecutive naturals, for example, 8280 + ... + 8753.

It is an arithmetic number, because the mean of its divisors is an integer number (681360).

Almost surely, 2^4036821 is an apocalyptic number.

It is an amenable number.

4036821 is a deficient number, since it is larger than the sum of its proper divisors (1414059).

4036821 is a wasteful number, since it uses less digits than its factorization.

4036821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17115.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 4036821 is about 2009.1841627885. The cubic root of 4036821 is about 159.2256990111.

The spelling of 4036821 in words is "four million, thirty-six thousand, eight hundred twenty-one".