14308921 has 12 divisors (see below), whose sum is σ = 16324560. Its totient is φ = 12437480.

The previous prime is 14308913. The next prime is 14308933. The reversal of 14308921 is 12980341.

It is a happy number.

It is not a de Polignac number, because 14308921 - 2³ = 14308913 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 14308921.

It is not an unprimeable number, because it can be changed into a prime (14308901) 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 11 ways as a sum of consecutive naturals, for example, 4590 + ... + 7048.

It is an arithmetic number, because the mean of its divisors is an integer number (1360380).

Almost surely, 2^14308921 is an apocalyptic number.

14308921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

14308921 is a deficient number, since it is larger than the sum of its proper divisors (2015639).

14308921 is a wasteful number, since it uses less digits than its factorization.

14308921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2516 (or 2493 counting only the distinct ones).

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

The square root of 14308921 is about 3782.7134440769. The cubic root of 14308921 is about 242.7740678616.

The spelling of 14308921 in words is "fourteen million, three hundred eight thousand, nine hundred twenty-one".