21714299 has 4 divisors (see below), whose sum is σ = 21750336. Its totient is φ = 21678264.

The previous prime is 21714281. The next prime is 21714313. The reversal of 21714299 is 99241712.

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

It is a cyclic number.

It is not a de Polignac number, because 21714299 - 2¹² = 21710203 is a prime.

It is a super-2 number, since 2×21714299² = 943021562122802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21714239) 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, 17099 + ... + 18324.

It is an arithmetic number, because the mean of its divisors is an integer number (5437584).

Almost surely, 2^21714299 is an apocalyptic number.

21714299 is a deficient number, since it is larger than the sum of its proper divisors (36037).

21714299 is an equidigital number, since it uses as much as digits as its factorization.

21714299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36036.

The product of its digits is 9072, while the sum is 35.

The square root of 21714299 is about 4659.8604056345. The cubic root of 21714299 is about 278.9856966070.

The spelling of 21714299 in words is "twenty-one million, seven hundred fourteen thousand, two hundred ninety-nine".