174942989 has 8 divisors (see below), whose sum is σ = 188902560. Its totient is φ = 161055216.

The previous prime is 174942979. The next prime is 174942997. The reversal of 174942989 is 989249471.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 174942989 - 2⁴ = 174942973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 174942989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (174942949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12827 + ... + 22680.

It is an arithmetic number, because the mean of its divisors is an integer number (23612820).

Almost surely, 2^174942989 is an apocalyptic number.

It is an amenable number.

174942989 is a deficient number, since it is larger than the sum of its proper divisors (13959571).

174942989 is a wasteful number, since it uses less digits than its factorization.

174942989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35899.

The product of its digits is 1306368, while the sum is 53.

The square root of 174942989 is about 13226.6015665401. The cubic root of 174942989 is about 559.2837238957.

The spelling of 174942989 in words is "one hundred seventy-four million, nine hundred forty-two thousand, nine hundred eighty-nine".