172490629 has 4 divisors (see below), whose sum is σ = 175065184. Its totient is φ = 169916076.

The previous prime is 172490627. The next prime is 172490651. The reversal of 172490629 is 926094271.

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 a cyclic number.

It is not a de Polignac number, because 172490629 - 2¹ = 172490627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172490591 and 172490600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172490621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287177 + ... + 1287310.

It is an arithmetic number, because the mean of its divisors is an integer number (43766296).

Almost surely, 2^172490629 is an apocalyptic number.

It is an amenable number.

172490629 is a deficient number, since it is larger than the sum of its proper divisors (2574555).

172490629 is an equidigital number, since it uses as much as digits as its factorization.

172490629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574554.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 172490629 is about 13133.5687838455. The cubic root of 172490629 is about 556.6580603129.

The spelling of 172490629 in words is "one hundred seventy-two million, four hundred ninety thousand, six hundred twenty-nine".