135872329 has 4 divisors (see below), whose sum is σ = 135987984. Its totient is φ = 135756676.

The previous prime is 135872323. The next prime is 135872351. The reversal of 135872329 is 923278531.

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 135872329 - 2²¹ = 133775177 is a prime.

It is a super-2 number, since 2×135872329² = 36922579575768482, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135872291 and 135872300.

It is not an unprimeable number, because it can be changed into a prime (135872323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56047 + ... + 58420.

It is an arithmetic number, because the mean of its divisors is an integer number (33996996).

Almost surely, 2^135872329 is an apocalyptic number.

It is an amenable number.

135872329 is a deficient number, since it is larger than the sum of its proper divisors (115655).

135872329 is a wasteful number, since it uses less digits than its factorization.

135872329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115654.

The product of its digits is 90720, while the sum is 40.

The square root of 135872329 is about 11656.4286554673. The cubic root of 135872329 is about 514.0953471169.

The spelling of 135872329 in words is "one hundred thirty-five million, eight hundred seventy-two thousand, three hundred twenty-nine".