20392963 has 2 divisors, whose sum is σ = 20392964. Its totient is φ = 20392962.

The previous prime is 20392961. The next prime is 20392987. The reversal of 20392963 is 36929302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20392963 - 2¹ = 20392961 is a prime.

Together with 20392961, it forms a pair of twin primes.

It is equal to p_1293946 and since 20392963 and 1293946 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20392961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10196481 + 10196482.

It is an arithmetic number, because the mean of its divisors is an integer number (10196482).

Almost surely, 2^20392963 is an apocalyptic number.

20392963 is a deficient number, since it is larger than the sum of its proper divisors (1).

20392963 is an equidigital number, since it uses as much as digits as its factorization.

20392963 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 20392963 is about 4515.8568400692. The cubic root of 20392963 is about 273.2080199251.

The spelling of 20392963 in words is "twenty million, three hundred ninety-two thousand, nine hundred sixty-three".