20014289 has 4 divisors (see below), whose sum is σ = 20025456. Its totient is φ = 20003124.

The previous prime is 20014279. The next prime is 20014331. The reversal of 20014289 is 98241002.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20014289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20014229) 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, 2219 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (5006364).

Almost surely, 2^20014289 is an apocalyptic number.

It is an amenable number.

20014289 is a deficient number, since it is larger than the sum of its proper divisors (11167).

20014289 is an equidigital number, since it uses as much as digits as its factorization.

20014289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11166.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20014289 is about 4473.7332285240. The cubic root of 20014289 is about 271.5063901262.

The spelling of 20014289 in words is "twenty million, fourteen thousand, two hundred eighty-nine".