14749721 has 4 divisors (see below), whose sum is σ = 16856832. Its totient is φ = 12642612.

The previous prime is 14749697. The next prime is 14749729. The reversal of 14749721 is 12794741.

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: 12794741 = 179 ⋅71479.

It is a cyclic number.

It is not a de Polignac number, because 14749721 - 2¹⁴ = 14733337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14749729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1053545 + ... + 1053558.

It is an arithmetic number, because the mean of its divisors is an integer number (4214208).

Almost surely, 2^14749721 is an apocalyptic number.

It is an amenable number.

14749721 is a deficient number, since it is larger than the sum of its proper divisors (2107111).

14749721 is an equidigital number, since it uses as much as digits as its factorization.

14749721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107110.

The product of its digits is 14112, while the sum is 35.

The square root of 14749721 is about 3840.5365510564. The cubic root of 14749721 is about 245.2418602860.

The spelling of 14749721 in words is "fourteen million, seven hundred forty-nine thousand, seven hundred twenty-one".