74122189 has 4 divisors (see below), whose sum is σ = 74169756. Its totient is φ = 74074624.

The previous prime is 74122177. The next prime is 74122241. The reversal of 74122189 is 98122147.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33698025 + 40424164 = 5805^2 + 6358^2 .

It is a cyclic number.

It is not a de Polignac number, because 74122189 - 2⁵ = 74122157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74122589) 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 in 3 ways as a sum of consecutive naturals, for example, 21364 + ... + 24589.

It is an arithmetic number, because the mean of its divisors is an integer number (18542439).

Almost surely, 2^74122189 is an apocalyptic number.

It is an amenable number.

74122189 is a deficient number, since it is larger than the sum of its proper divisors (47567).

74122189 is a wasteful number, since it uses less digits than its factorization.

74122189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47566.

The product of its digits is 8064, while the sum is 34.

The square root of 74122189 is about 8609.4244290777. The cubic root of 74122189 is about 420.0645951291.

The spelling of 74122189 in words is "seventy-four million, one hundred twenty-two thousand, one hundred eighty-nine".