172949 has 8 divisors (see below), whose sum is σ = 204288. Its totient is φ = 143280.

The previous prime is 172933. The next prime is 172969. The reversal of 172949 is 949271.

172949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172949 - 2⁴ = 172933 is a prime.

It is a super-2 number, since 2×172949² = 59822713202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182 + ... + 615.

It is an arithmetic number, because the mean of its divisors is an integer number (25536).

2¹⁷²⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

172949 is a deficient number, since it is larger than the sum of its proper divisors (31339).

172949 is an equidigital number, since it uses as much as digits as its factorization.

172949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835.

The product of its digits is 4536, while the sum is 32.

The square root of 172949 is about 415.8713743455. The cubic root of 172949 is about 55.7150705879.

The spelling of 172949 in words is "one hundred seventy-two thousand, nine hundred forty-nine".