173440394 has 8 divisors (see below), whose sum is σ = 260255268. Its totient is φ = 86688640.

The previous prime is 173440391. The next prime is 173440411. The reversal of 173440394 is 493044371.

It can be written as a sum of positive squares in 2 ways, for example, as 129390625 + 44049769 = 11375^2 + 6637^2 .

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

It is not an unprimeable number, because it can be changed into a prime (173440391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8177 + ... + 20340.

Almost surely, 2^173440394 is an apocalyptic number.

173440394 is a deficient number, since it is larger than the sum of its proper divisors (86814874).

173440394 is a wasteful number, since it uses less digits than its factorization.

173440394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31560.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 173440394 is about 13169.6770651372. The cubic root of 173440394 is about 557.6778779122.

The spelling of 173440394 in words is "one hundred seventy-three million, four hundred forty thousand, three hundred ninety-four".