14407721 has 8 divisors (see below), whose sum is σ = 15440544. Its totient is φ = 13395520.

The previous prime is 14407711. The next prime is 14407727. The reversal of 14407721 is 12770441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 14407721 - 2¹⁸ = 14145577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14407727) 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 7 ways as a sum of consecutive naturals, for example, 3695 + ... + 6516.

It is an arithmetic number, because the mean of its divisors is an integer number (1930068).

Almost surely, 2^14407721 is an apocalyptic number.

It is an amenable number.

14407721 is a deficient number, since it is larger than the sum of its proper divisors (1032823).

14407721 is a wasteful number, since it uses less digits than its factorization.

14407721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10311.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 14407721 is about 3795.7503869459. The cubic root of 14407721 is about 243.3315541664.

The spelling of 14407721 in words is "fourteen million, four hundred seven thousand, seven hundred twenty-one".