21414983 has 2 divisors, whose sum is σ = 21414984. Its totient is φ = 21414982.

The previous prime is 21414973. The next prime is 21415027. The reversal of 21414983 is 38941412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21414983 - 2¹⁴ = 21398599 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21414923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10707491 + 10707492.

It is an arithmetic number, because the mean of its divisors is an integer number (10707492).

Almost surely, 2^21414983 is an apocalyptic number.

21414983 is a deficient number, since it is larger than the sum of its proper divisors (1).

21414983 is an equidigital number, since it uses as much as digits as its factorization.

21414983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 21414983 is about 4627.6325480747. The cubic root of 21414983 is about 277.6978887713.

The spelling of 21414983 in words is "twenty-one million, four hundred fourteen thousand, nine hundred eighty-three".