172444089 has 16 divisors (see below), whose sum is σ = 232839360. Its totient is φ = 113513280.

The previous prime is 172444009. The next prime is 172444091. The reversal of 172444089 is 980444271.

172444089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172444089 - 2¹⁵ = 172411321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (172444009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124179 + ... + 125559.

It is an arithmetic number, because the mean of its divisors is an integer number (14552460).

Almost surely, 2^172444089 is an apocalyptic number.

It is an amenable number.

172444089 is a deficient number, since it is larger than the sum of its proper divisors (60395271).

172444089 is a wasteful number, since it uses less digits than its factorization.

172444089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 172444089 is about 13131.7968686696. The cubic root of 172444089 is about 556.6079915128.

The spelling of 172444089 in words is "one hundred seventy-two million, four hundred forty-four thousand, eighty-nine".