20293963 has 2 divisors, whose sum is σ = 20293964. Its totient is φ = 20293962.

The previous prime is 20293961. The next prime is 20294003. The reversal of 20293963 is 36939202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20293963 - 2¹ = 20293961 is a prime.

Together with 20293961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20293961) 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, 10146981 + 10146982.

It is an arithmetic number, because the mean of its divisors is an integer number (10146982).

Almost surely, 2^20293963 is an apocalyptic number.

20293963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20293963 is an equidigital number, since it uses as much as digits as its factorization.

20293963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 20293963 is about 4504.8821294236. The cubic root of 20293963 is about 272.7651959150.

The spelling of 20293963 in words is "twenty million, two hundred ninety-three thousand, nine hundred sixty-three".