173213789 has 8 divisors (see below), whose sum is σ = 198073728. Its totient is φ = 148382640.

The previous prime is 173213767. The next prime is 173213809. The reversal of 173213789 is 987312371.

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

It is not a de Polignac number, because 173213789 - 2⁸ = 173213533 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 (173213749) 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, 7784 + ... + 20174.

It is an arithmetic number, because the mean of its divisors is an integer number (24759216).

Almost surely, 2^173213789 is an apocalyptic number.

It is an amenable number.

173213789 is a deficient number, since it is larger than the sum of its proper divisors (24859939).

173213789 is a wasteful number, since it uses less digits than its factorization.

173213789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14395.

The product of its digits is 63504, while the sum is 41.

The square root of 173213789 is about 13161.0709670604. The cubic root of 173213789 is about 557.4348978522.

The spelling of 173213789 in words is "one hundred seventy-three million, two hundred thirteen thousand, seven hundred eighty-nine".