173439073 has 2 divisors, whose sum is σ = 173439074. Its totient is φ = 173439072.

The previous prime is 173439031. The next prime is 173439089. The reversal of 173439073 is 370934371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 173396224 + 42849 = 13168^2 + 207^2 .

It is an emirp because it is prime and its reverse (370934371) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173439073 is a prime.

It is a super-2 number, since 2×173439073² = 60162224086198658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (173439023) 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 as a sum of consecutive naturals, namely, 86719536 + 86719537.

It is an arithmetic number, because the mean of its divisors is an integer number (86719537).

Almost surely, 2^173439073 is an apocalyptic number.

It is an amenable number.

173439073 is a deficient number, since it is larger than the sum of its proper divisors (1).

173439073 is an equidigital number, since it uses as much as digits as its factorization.

173439073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 173439073 is about 13169.6269119516. The cubic root of 173439073 is about 557.6764620668.

The spelling of 173439073 in words is "one hundred seventy-three million, four hundred thirty-nine thousand, seventy-three".