10904821 has 2 divisors, whose sum is σ = 10904822. Its totient is φ = 10904820.

The previous prime is 10904809. The next prime is 10904827. The reversal of 10904821 is 12840901.

It is a happy number.

10904821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8468100 + 2436721 = 2910^2 + 1561^2 .

It is a cyclic number.

It is not a de Polignac number, because 10904821 - 2¹⁵ = 10872053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10904827) 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 as a sum of consecutive naturals, namely, 5452410 + 5452411.

It is an arithmetic number, because the mean of its divisors is an integer number (5452411).

Almost surely, 2^10904821 is an apocalyptic number.

It is an amenable number.

10904821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10904821 is an equidigital number, since it uses as much as digits as its factorization.

10904821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 10904821 is about 3302.2448425276. The cubic root of 10904821 is about 221.7547070208.

The spelling of 10904821 in words is "ten million, nine hundred four thousand, eight hundred twenty-one".