21714983 has 4 divisors (see below), whose sum is σ = 21759000. Its totient is φ = 21670968.

The previous prime is 21714977. The next prime is 21714989. The reversal of 21714983 is 38941712.

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

It is an interprime number because it is at equal distance from previous prime (21714977) and next prime (21714989).

It is a cyclic number.

It is not a de Polignac number, because 21714983 - 2⁸ = 21714727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714989) 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, 21260 + ... + 22257.

It is an arithmetic number, because the mean of its divisors is an integer number (5439750).

Almost surely, 2^21714983 is an apocalyptic number.

21714983 is a deficient number, since it is larger than the sum of its proper divisors (44017).

21714983 is an equidigital number, since it uses as much as digits as its factorization.

21714983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44016.

The product of its digits is 12096, while the sum is 35.

The square root of 21714983 is about 4659.9337978130. The cubic root of 21714983 is about 278.9886259243.

The spelling of 21714983 in words is "twenty-one million, seven hundred fourteen thousand, nine hundred eighty-three".