172492329 has 4 divisors (see below), whose sum is σ = 229989776. Its totient is φ = 114994884.

The previous prime is 172492321. The next prime is 172492337. The reversal of 172492329 is 923294271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (172492321) and next prime (172492337).

It is not a de Polignac number, because 172492329 - 2³ = 172492321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172492321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28748719 + ... + 28748724.

It is an arithmetic number, because the mean of its divisors is an integer number (57497444).

Almost surely, 2^172492329 is an apocalyptic number.

It is an amenable number.

172492329 is a deficient number, since it is larger than the sum of its proper divisors (57497447).

172492329 is an equidigital number, since it uses as much as digits as its factorization.

172492329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57497446.

The product of its digits is 54432, while the sum is 39.

The square root of 172492329 is about 13133.6335033379. The cubic root of 172492329 is about 556.6598890414.

The spelling of 172492329 in words is "one hundred seventy-two million, four hundred ninety-two thousand, three hundred twenty-nine".