173213739 has 12 divisors (see below), whose sum is σ = 251091672. Its totient is φ = 115063200.

The previous prime is 173213717. The next prime is 173213749. The reversal of 173213739 is 937312371.

It is not a de Polignac number, because 173213739 - 2⁵ = 173213707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (173213749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31717 + ... + 36774.

It is an arithmetic number, because the mean of its divisors is an integer number (20924306).

Almost surely, 2^173213739 is an apocalyptic number.

173213739 is a deficient number, since it is larger than the sum of its proper divisors (77877933).

173213739 is a wasteful number, since it uses less digits than its factorization.

173213739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68778 (or 68775 counting only the distinct ones).

The product of its digits is 23814, while the sum is 36.

The square root of 173213739 is about 13161.0690675188. The cubic root of 173213739 is about 557.4348442157.

The spelling of 173213739 in words is "one hundred seventy-three million, two hundred thirteen thousand, seven hundred thirty-nine".