21934041 has 4 divisors (see below), whose sum is σ = 29245392. Its totient is φ = 14622692.

The previous prime is 21934039. The next prime is 21934049. The reversal of 21934041 is 14043912.

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.

It is a cyclic number.

It is not a de Polignac number, because 21934041 - 2¹ = 21934039 is a prime.

It is a super-2 number, since 2×21934041² = 962204309179362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21934049) 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, 3655671 + ... + 3655676.

It is an arithmetic number, because the mean of its divisors is an integer number (7311348).

Almost surely, 2^21934041 is an apocalyptic number.

It is an amenable number.

21934041 is a deficient number, since it is larger than the sum of its proper divisors (7311351).

21934041 is an equidigital number, since it uses as much as digits as its factorization.

21934041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7311350.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 21934041 is about 4683.3792287194. The cubic root of 21934041 is about 279.9236228756.

Adding to 21934041 its reverse (14043912), we get a palindrome (35977953).

The spelling of 21934041 in words is "twenty-one million, nine hundred thirty-four thousand, forty-one".