135989673 has 8 divisors (see below), whose sum is σ = 182010048. Its totient is φ = 90314544.

The previous prime is 135989657. The next prime is 135989683. The reversal of 135989673 is 376989531.

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

It is not a de Polignac number, because 135989673 - 2⁴ = 135989657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135989683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85390 + ... + 86967.

It is an arithmetic number, because the mean of its divisors is an integer number (22751256).

Almost surely, 2^135989673 is an apocalyptic number.

It is an amenable number.

135989673 is a deficient number, since it is larger than the sum of its proper divisors (46020375).

135989673 is a wasteful number, since it uses less digits than its factorization.

135989673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172623.

The product of its digits is 1224720, while the sum is 51.

The square root of 135989673 is about 11661.4610148129. The cubic root of 135989673 is about 514.2433013193.

The spelling of 135989673 in words is "one hundred thirty-five million, nine hundred eighty-nine thousand, six hundred seventy-three".