73140889 has 2 divisors, whose sum is σ = 73140890. Its totient is φ = 73140888.

The previous prime is 73140869. The next prime is 73140913. The reversal of 73140889 is 98804137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60715264 + 12425625 = 7792^2 + 3525^2 .

It is a cyclic number.

It is not a de Polignac number, because 73140889 - 2¹⁵ = 73108121 is a prime.

It is not a weakly prime, because it can be changed into another prime (73140869) 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, 36570444 + 36570445.

It is an arithmetic number, because the mean of its divisors is an integer number (36570445).

Almost surely, 2^73140889 is an apocalyptic number.

It is an amenable number.

73140889 is a deficient number, since it is larger than the sum of its proper divisors (1).

73140889 is an equidigital number, since it uses as much as digits as its factorization.

73140889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 73140889 is about 8552.2446761070. The cubic root of 73140889 is about 418.2026157655.

The spelling of 73140889 in words is "seventy-three million, one hundred forty thousand, eight hundred eighty-nine".