74085289 has 2 divisors, whose sum is σ = 74085290. Its totient is φ = 74085288.

The previous prime is 74085287. The next prime is 74085329. The reversal of 74085289 is 98258047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39275289 + 34810000 = 6267^2 + 5900^2 .

It is a cyclic number.

It is not a de Polignac number, because 74085289 - 2¹ = 74085287 is a prime.

Together with 74085287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (74085287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37042644 + 37042645.

It is an arithmetic number, because the mean of its divisors is an integer number (37042645).

Almost surely, 2^74085289 is an apocalyptic number.

It is an amenable number.

74085289 is a deficient number, since it is larger than the sum of its proper divisors (1).

74085289 is an equidigital number, since it uses as much as digits as its factorization.

74085289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 74085289 is about 8607.2811619001. The cubic root of 74085289 is about 419.9948771106.

The spelling of 74085289 in words is "seventy-four million, eighty-five thousand, two hundred eighty-nine".