21714395 has 4 divisors (see below), whose sum is σ = 26057280. Its totient is φ = 17371512.

The previous prime is 21714391. The next prime is 21714401. The reversal of 21714395 is 59341712.

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 21714395 - 2² = 21714391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21714391) 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, 2171435 + ... + 2171444.

It is an arithmetic number, because the mean of its divisors is an integer number (6514320).

Almost surely, 2^21714395 is an apocalyptic number.

21714395 is a deficient number, since it is larger than the sum of its proper divisors (4342885).

21714395 is an equidigital number, since it uses as much as digits as its factorization.

21714395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4342884.

The product of its digits is 7560, while the sum is 32.

The square root of 21714395 is about 4659.8707063609. The cubic root of 21714395 is about 278.9861077430.

The spelling of 21714395 in words is "twenty-one million, seven hundred fourteen thousand, three hundred ninety-five".