172413809 has 16 divisors (see below), whose sum is σ = 185201280. Its totient is φ = 160030080.

The previous prime is 172413653. The next prime is 172413817. The reversal of 172413809 is 908314271.

172413809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 172413809 - 2¹⁶ = 172348273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172413889) 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, 272924 + ... + 273554.

It is an arithmetic number, because the mean of its divisors is an integer number (11575080).

Almost surely, 2^172413809 is an apocalyptic number.

172413809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

172413809 is a deficient number, since it is larger than the sum of its proper divisors (12787471).

172413809 is a wasteful number, since it uses less digits than its factorization.

172413809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 172413809 is about 13130.6438912949. The cubic root of 172413809 is about 556.5754107564.

The spelling of 172413809 in words is "one hundred seventy-two million, four hundred thirteen thousand, eight hundred nine".