14840821 has 2 divisors, whose sum is σ = 14840822. Its totient is φ = 14840820.

The previous prime is 14840809. The next prime is 14840831. The reversal of 14840821 is 12804841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13608721 + 1232100 = 3689^2 + 1110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14840821 is a prime.

It is equal to p₉₆₁₁₃₈ and since 14840821 and 961138 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14840821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14840831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7420410 + 7420411.

It is an arithmetic number, because the mean of its divisors is an integer number (7420411).

Almost surely, 2^14840821 is an apocalyptic number.

It is an amenable number.

14840821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14840821 is an equidigital number, since it uses as much as digits as its factorization.

14840821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 14840821 is about 3852.3786158684. The cubic root of 14840821 is about 245.7457273082.

The spelling of 14840821 in words is "fourteen million, eight hundred forty thousand, eight hundred twenty-one".