73908889 has 2 divisors, whose sum is σ = 73908890. Its totient is φ = 73908888.

The previous prime is 73908851. The next prime is 73908899. The reversal of 73908889 is 98880937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47817225 + 26091664 = 6915^2 + 5108^2 .

It is a cyclic number.

It is not a de Polignac number, because 73908889 - 2²³ = 65520281 is a prime.

It is not a weakly prime, because it can be changed into another prime (73908829) 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, 36954444 + 36954445.

It is an arithmetic number, because the mean of its divisors is an integer number (36954445).

Almost surely, 2^73908889 is an apocalyptic number.

It is an amenable number.

73908889 is a deficient number, since it is larger than the sum of its proper divisors (1).

73908889 is an equidigital number, since it uses as much as digits as its factorization.

73908889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 73908889 is about 8597.0279166698. The cubic root of 73908889 is about 419.6612707286.

The spelling of 73908889 in words is "seventy-three million, nine hundred eight thousand, eight hundred eighty-nine".