172341909 has 12 divisors (see below), whose sum is σ = 249056652. Its totient is φ = 114840000.

The previous prime is 172341907. The next prime is 172341919. The reversal of 172341909 is 909143271.

172341909 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 2 ways, for example, as 114961284 + 57380625 = 10722^2 + 7575^2 .

It is not a de Polignac number, because 172341909 - 2¹ = 172341907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172341907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26809 + ... + 32609.

It is an arithmetic number, because the mean of its divisors is an integer number (20754721).

Almost surely, 2^172341909 is an apocalyptic number.

It is an amenable number.

172341909 is a deficient number, since it is larger than the sum of its proper divisors (76714743).

172341909 is a wasteful number, since it uses less digits than its factorization.

172341909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9108 (or 9105 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 172341909 is about 13127.9057354934. The cubic root of 172341909 is about 556.4980323138.

The spelling of 172341909 in words is "one hundred seventy-two million, three hundred forty-one thousand, nine hundred nine".