14021911 has 4 divisors (see below), whose sum is σ = 14041192. Its totient is φ = 14002632.

The previous prime is 14021897. The next prime is 14021929. The reversal of 14021911 is 11912041.

It is a semiprime because it is the product of two primes.

It is a 4-Lehmer number, since φ(14021911) divides (14021911-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 14021911 - 2⁵ = 14021879 is a prime.

It is a super-2 number, since 2×14021911² = 393227976183842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14021941) 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, 8505 + ... + 10018.

It is an arithmetic number, because the mean of its divisors is an integer number (3510298).

Almost surely, 2^14021911 is an apocalyptic number.

14021911 is a deficient number, since it is larger than the sum of its proper divisors (19281).

14021911 is an equidigital number, since it uses as much as digits as its factorization.

14021911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19280.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 14021911 is about 3744.5842225807. The cubic root of 14021911 is about 241.1398957064.

Adding to 14021911 its reverse (11912041), we get a palindrome (25933952).

The spelling of 14021911 in words is "fourteen million, twenty-one thousand, nine hundred eleven".