14782921 has 4 divisors (see below), whose sum is σ = 14848272. Its totient is φ = 14717572.

The previous prime is 14782909. The next prime is 14782949. The reversal of 14782921 is 12928741.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12928741 = 7 ⋅1846963.

It is a cyclic number.

It is not a de Polignac number, because 14782921 - 2⁹ = 14782409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14782961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32335 + ... + 32788.

It is an arithmetic number, because the mean of its divisors is an integer number (3712068).

Almost surely, 2^14782921 is an apocalyptic number.

It is an amenable number.

14782921 is a deficient number, since it is larger than the sum of its proper divisors (65351).

14782921 is an equidigital number, since it uses as much as digits as its factorization.

14782921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65350.

The product of its digits is 8064, while the sum is 34.

The square root of 14782921 is about 3844.8564342508. The cubic root of 14782921 is about 245.4257265537.

The spelling of 14782921 in words is "fourteen million, seven hundred eighty-two thousand, nine hundred twenty-one".