172708099 has 4 divisors (see below), whose sum is σ = 178279360. Its totient is φ = 167136840.

The previous prime is 172708097. The next prime is 172708103. The reversal of 172708099 is 990807271.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172708099 - 2¹ = 172708097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172708097) 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 3 ways as a sum of consecutive naturals, for example, 2785584 + ... + 2785645.

It is an arithmetic number, because the mean of its divisors is an integer number (44569840).

Almost surely, 2^172708099 is an apocalyptic number.

172708099 is a deficient number, since it is larger than the sum of its proper divisors (5571261).

172708099 is an equidigital number, since it uses as much as digits as its factorization.

172708099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571260.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 172708099 is about 13141.8453422645. The cubic root of 172708099 is about 556.8919002422.

The spelling of 172708099 in words is "one hundred seventy-two million, seven hundred eight thousand, ninety-nine".