20390483 has 2 divisors, whose sum is σ = 20390484. Its totient is φ = 20390482.

The previous prime is 20390431. The next prime is 20390549. The reversal of 20390483 is 38409302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20390483 - 2¹⁰ = 20389459 is a prime.

It is a super-3 number, since 3×20390483³ (a number of 23 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20390413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10195241 + 10195242.

It is an arithmetic number, because the mean of its divisors is an integer number (10195242).

Almost surely, 2^20390483 is an apocalyptic number.

20390483 is a deficient number, since it is larger than the sum of its proper divisors (1).

20390483 is an equidigital number, since it uses as much as digits as its factorization.

20390483 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20390483 is about 4515.5822437422. The cubic root of 20390483 is about 273.1969444811.

Adding to 20390483 its reverse (38409302), we get a palindrome (58799785).

The spelling of 20390483 in words is "twenty million, three hundred ninety thousand, four hundred eighty-three".