74136089 has 2 divisors, whose sum is σ = 74136090. Its totient is φ = 74136088.

The previous prime is 74136071. The next prime is 74136091. The reversal of 74136089 is 98063147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64320400 + 9815689 = 8020^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 74136089 - 2⁸ = 74135833 is a prime.

Together with 74136091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74136059) 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, 37068044 + 37068045.

It is an arithmetic number, because the mean of its divisors is an integer number (37068045).

Almost surely, 2^74136089 is an apocalyptic number.

It is an amenable number.

74136089 is a deficient number, since it is larger than the sum of its proper divisors (1).

74136089 is an equidigital number, since it uses as much as digits as its factorization.

74136089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 74136089 is about 8610.2316461289. The cubic root of 74136089 is about 420.0908514725.

The spelling of 74136089 in words is "seventy-four million, one hundred thirty-six thousand, eighty-nine".