21883049 has 2 divisors, whose sum is σ = 21883050. Its totient is φ = 21883048.

The previous prime is 21883039. The next prime is 21883067. The reversal of 21883049 is 94038812.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18215824 + 3667225 = 4268^2 + 1915^2 .

It is a cyclic number.

It is not a de Polignac number, because 21883049 - 2⁸ = 21882793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21883019) 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, 10941524 + 10941525.

It is an arithmetic number, because the mean of its divisors is an integer number (10941525).

Almost surely, 2^21883049 is an apocalyptic number.

It is an amenable number.

21883049 is a deficient number, since it is larger than the sum of its proper divisors (1).

21883049 is an equidigital number, since it uses as much as digits as its factorization.

21883049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 21883049 is about 4677.9321286226. The cubic root of 21883049 is about 279.7065335132.

The spelling of 21883049 in words is "twenty-one million, eight hundred eighty-three thousand, forty-nine".