171412109 has 6 divisors (see below), whose sum is σ = 188411790. Its totient is φ = 155829080.

The previous prime is 171412099. The next prime is 171412183. The reversal of 171412109 is 901214171.

171412109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 171348100 + 64009 = 13090^2 + 253^2 .

It is not a de Polignac number, because 171412109 - 2⁴ = 171412093 is a prime.

It is a super-2 number, since 2×171412109² = 58764222223655762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171415109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 708194 + ... + 708435.

It is an arithmetic number, because the mean of its divisors is an integer number (31401965).

Almost surely, 2^171412109 is an apocalyptic number.

It is an amenable number.

171412109 is a deficient number, since it is larger than the sum of its proper divisors (16999681).

171412109 is a wasteful number, since it uses less digits than its factorization.

171412109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416651 (or 1416640 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 171412109 is about 13092.4447296905. Note that the first 3 decimals coincide. The cubic root of 171412109 is about 555.4954415860.

The spelling of 171412109 in words is "one hundred seventy-one million, four hundred twelve thousand, one hundred nine".