842989173 has 8 divisors (see below), whose sum is σ = 1210446048. Its totient is φ = 518762544.

The previous prime is 842989163. The next prime is 842989187. The reversal of 842989173 is 371989248.

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

It is not a de Polignac number, because 842989173 - 2⁵ = 842989141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (842989163) 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, 10807515 + ... + 10807592.

It is an arithmetic number, because the mean of its divisors is an integer number (151305756).

Almost surely, 2^842989173 is an apocalyptic number.

It is an amenable number.

842989173 is a deficient number, since it is larger than the sum of its proper divisors (367456875).

842989173 is a wasteful number, since it uses less digits than its factorization.

842989173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21615123.

The product of its digits is 870912, while the sum is 51.

The square root of 842989173 is about 29034.2758304732. The cubic root of 842989173 is about 944.6566777259.

The spelling of 842989173 in words is "eight hundred forty-two million, nine hundred eighty-nine thousand, one hundred seventy-three".