21099483 has 6 divisors (see below), whose sum is σ = 30477044. Its totient is φ = 14066316.

The previous prime is 21099469. The next prime is 21099503. The reversal of 21099483 is 38499012.

It is not a de Polignac number, because 21099483 - 2⁴ = 21099467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21099413) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1172185 + ... + 1172202.

Almost surely, 2^21099483 is an apocalyptic number.

21099483 is a deficient number, since it is larger than the sum of its proper divisors (9377561).

21099483 is a wasteful number, since it uses less digits than its factorization.

21099483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344393 (or 2344390 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 21099483 is about 4593.4173553031. The cubic root of 21099483 is about 276.3273918966.

The spelling of 21099483 in words is "twenty-one million, ninety-nine thousand, four hundred eighty-three".