14930821 has 2 divisors, whose sum is σ = 14930822. Its totient is φ = 14930820.

The previous prime is 14930807. The next prime is 14930833. The reversal of 14930821 is 12803941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10329796 + 4601025 = 3214^2 + 2145^2 .

It is a cyclic number.

It is not a de Polignac number, because 14930821 - 2⁷ = 14930693 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14930821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14930801) 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, 7465410 + 7465411.

It is an arithmetic number, because the mean of its divisors is an integer number (7465411).

Almost surely, 2^14930821 is an apocalyptic number.

It is an amenable number.

14930821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14930821 is an equidigital number, since it uses as much as digits as its factorization.

14930821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 14930821 is about 3864.0420546366. The cubic root of 14930821 is about 246.2414895665.

It can be divided in two parts, 14930 and 821, that added together give a palindrome (15751).

The spelling of 14930821 in words is "fourteen million, nine hundred thirty thousand, eight hundred twenty-one".