173920897 has 4 divisors (see below), whose sum is σ = 184151556. Its totient is φ = 163690240.

The previous prime is 173920891. The next prime is 173920907. The reversal of 173920897 is 798029371.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 798029371 = 41 ⋅19464131.

It can be written as a sum of positive squares in 2 ways, for example, as 138862656 + 35058241 = 11784^2 + 5921^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-173920897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (173920891) 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 in 3 ways as a sum of consecutive naturals, for example, 5115304 + ... + 5115337.

It is an arithmetic number, because the mean of its divisors is an integer number (46037889).

Almost surely, 2^173920897 is an apocalyptic number.

173920897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

173920897 is a deficient number, since it is larger than the sum of its proper divisors (10230659).

173920897 is a wasteful number, since it uses less digits than its factorization.

173920897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10230658.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 173920897 is about 13187.9072259400. The cubic root of 173920897 is about 558.1924039844.

The spelling of 173920897 in words is "one hundred seventy-three million, nine hundred twenty thousand, eight hundred ninety-seven".