21482999 has 2 divisors, whose sum is σ = 21483000. Its totient is φ = 21482998.

The previous prime is 21482987. The next prime is 21483013. The reversal of 21482999 is 99928412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21482999 - 2⁸ = 21482743 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21482959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10741499 + 10741500.

It is an arithmetic number, because the mean of its divisors is an integer number (10741500).

Almost surely, 2^21482999 is an apocalyptic number.

21482999 is a deficient number, since it is larger than the sum of its proper divisors (1).

21482999 is an equidigital number, since it uses as much as digits as its factorization.

21482999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 44.

The square root of 21482999 is about 4634.9756202164. The cubic root of 21482999 is about 277.9915762677.

The spelling of 21482999 in words is "twenty-one million, four hundred eighty-two thousand, nine hundred ninety-nine".