73989863 has 2 divisors, whose sum is σ = 73989864. Its totient is φ = 73989862.

The previous prime is 73989847. The next prime is 73989869. The reversal of 73989863 is 36898937.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73989863 - 2⁴ = 73989847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73989869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36994931 + 36994932.

It is an arithmetic number, because the mean of its divisors is an integer number (36994932).

Almost surely, 2^73989863 is an apocalyptic number.

73989863 is a deficient number, since it is larger than the sum of its proper divisors (1).

73989863 is an equidigital number, since it uses as much as digits as its factorization.

73989863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 73989863 is about 8601.7360457061. The cubic root of 73989863 is about 419.8144739934.

The spelling of 73989863 in words is "seventy-three million, nine hundred eighty-nine thousand, eight hundred sixty-three".