21943114 has 4 divisors (see below), whose sum is σ = 32914674. Its totient is φ = 10971556.

The previous prime is 21943099. The next prime is 21943171. The reversal of 21943114 is 41134912.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 11594025 + 10349089 = 3405^2 + 3217^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5485777 + ... + 5485780.

Almost surely, 2^21943114 is an apocalyptic number.

21943114 is a deficient number, since it is larger than the sum of its proper divisors (10971560).

21943114 is a wasteful number, since it uses less digits than its factorization.

21943114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10971559.

The product of its digits is 864, while the sum is 25.

The square root of 21943114 is about 4684.3477667654. The cubic root of 21943114 is about 279.9622142888.

The spelling of 21943114 in words is "twenty-one million, nine hundred forty-three thousand, one hundred fourteen".