172969 has 2 divisors, whose sum is σ = 172970. Its totient is φ = 172968.

The previous prime is 172933. The next prime is 172973. The reversal of 172969 is 969271.

172969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97344 + 75625 = 312^2 + 275^2 .

It is an emirp because it is prime and its reverse (969271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 172969 - 2¹¹ = 170921 is a prime.

It is a super-2 number, since 2×172969² = 59836549922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (172999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86484 + 86485.

It is an arithmetic number, because the mean of its divisors is an integer number (86485).

2¹⁷²⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

172969 is a deficient number, since it is larger than the sum of its proper divisors (1).

172969 is an equidigital number, since it uses as much as digits as its factorization.

172969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 172969 is about 415.8954195468. The cubic root of 172969 is about 55.7172181544.

The spelling of 172969 in words is "one hundred seventy-two thousand, nine hundred sixty-nine".