135989847 has 66 divisors (see below), whose sum is σ = 242335728. Its totient is φ = 76055112.

The previous prime is 135989827. The next prime is 135989873. The reversal of 135989847 is 748989531.

135989847 is a `hidden beast` number, since 1 + 3 + 598 + 9 + 8 + 47 = 666.

It is not a de Polignac number, because 135989847 - 2¹⁰ = 135988823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135989793 and 135989802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135989827) by changing a digit.

It is a polite number, since it can be written in 65 ways as a sum of consecutive naturals, for example, 2893378 + ... + 2893424.

Almost surely, 2^135989847 is an apocalyptic number.

135989847 is a deficient number, since it is larger than the sum of its proper divisors (106345881).

135989847 is an frugal number, since it uses more digits than its factorization.

135989847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91 (or 57 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 135989847 is about 11661.4684752822. The cubic root of 135989847 is about 514.2435206455.

The spelling of 135989847 in words is "one hundred thirty-five million, nine hundred eighty-nine thousand, eight hundred forty-seven".