21079483 has 2 divisors, whose sum is σ = 21079484. Its totient is φ = 21079482.

The previous prime is 21079481. The next prime is 21079501. The reversal of 21079483 is 38497012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21079483 - 2¹ = 21079481 is a prime.

Together with 21079481, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21079481) 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, 10539741 + 10539742.

It is an arithmetic number, because the mean of its divisors is an integer number (10539742).

Almost surely, 2^21079483 is an apocalyptic number.

21079483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21079483 is an equidigital number, since it uses as much as digits as its factorization.

21079483 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 21079483 is about 4591.2398107701. The cubic root of 21079483 is about 276.2400549234.

It can be divided in two parts, 2107 and 9483, that multiplied together give a triangular number (19980681 = T₆₃₂₁).

The spelling of 21079483 in words is "twenty-one million, seventy-nine thousand, four hundred eighty-three".