974428189 has 24 divisors (see below), whose sum is σ = 1194576768. Its totient is φ = 777142080.

The previous prime is 974428187. The next prime is 974428271. The reversal of 974428189 is 981824479.

It is a happy number.

It is not a de Polignac number, because 974428189 - 2¹ = 974428187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974428183) 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 23 ways as a sum of consecutive naturals, for example, 218199 + ... + 222619.

It is an arithmetic number, because the mean of its divisors is an integer number (49774032).

Almost surely, 2^974428189 is an apocalyptic number.

It is an amenable number.

974428189 is a deficient number, since it is larger than the sum of its proper divisors (220148579).

974428189 is a wasteful number, since it uses less digits than its factorization.

974428189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4525 (or 4488 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The square root of 974428189 is about 31215.8323451418. The cubic root of 974428189 is about 991.4023553510.

The spelling of 974428189 in words is "nine hundred seventy-four million, four hundred twenty-eight thousand, one hundred eighty-nine".