21793483 has 2 divisors, whose sum is σ = 21793484. Its totient is φ = 21793482.

The previous prime is 21793469. The next prime is 21793487. The reversal of 21793483 is 38439712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21793483 - 2⁵ = 21793451 is a prime.

It is not a weakly prime, because it can be changed into another prime (21793487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10896741 + 10896742.

It is an arithmetic number, because the mean of its divisors is an integer number (10896742).

Almost surely, 2^21793483 is an apocalyptic number.

21793483 is a deficient number, since it is larger than the sum of its proper divisors (1).

21793483 is an equidigital number, since it uses as much as digits as its factorization.

21793483 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 21793483 is about 4668.3490657833. The cubic root of 21793483 is about 279.3244043691.

The spelling of 21793483 in words is "twenty-one million, seven hundred ninety-three thousand, four hundred eighty-three".