74089489 has 2 divisors, whose sum is σ = 74089490. Its totient is φ = 74089488.

The previous prime is 74089487. The next prime is 74089513. The reversal of 74089489 is 98498047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65286400 + 8803089 = 8080^2 + 2967^2 .

It is an emirp because it is prime and its reverse (98498047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74089489 - 2¹ = 74089487 is a prime.

It is a super-2 number, since 2×74089489² = 10978504760562242, which contains 22 as substring.

Together with 74089487, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (74089481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37044744 + 37044745.

It is an arithmetic number, because the mean of its divisors is an integer number (37044745).

Almost surely, 2^74089489 is an apocalyptic number.

It is an amenable number.

74089489 is a deficient number, since it is larger than the sum of its proper divisors (1).

74089489 is an equidigital number, since it uses as much as digits as its factorization.

74089489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 74089489 is about 8607.5251379244. The cubic root of 74089489 is about 420.0028136622.

The spelling of 74089489 in words is "seventy-four million, eighty-nine thousand, four hundred eighty-nine".