21916483 has 2 divisors, whose sum is σ = 21916484. Its totient is φ = 21916482.

The previous prime is 21916459. The next prime is 21916511. The reversal of 21916483 is 38461912.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21916483 is a prime.

It is not a weakly prime, because it can be changed into another prime (21913483) by changing a digit.

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, 10958241 + 10958242.

It is an arithmetic number, because the mean of its divisors is an integer number (10958242).

Almost surely, 2^21916483 is an apocalyptic number.

21916483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21916483 is an equidigital number, since it uses as much as digits as its factorization.

21916483 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 21916483 is about 4681.5043522355. The cubic root of 21916483 is about 279.8489108333.

The spelling of 21916483 in words is "twenty-one million, nine hundred sixteen thousand, four hundred eighty-three".