135298989 has 24 divisors (see below), whose sum is σ = 224789760. Its totient is φ = 76815648.

The previous prime is 135298967. The next prime is 135298991. The reversal of 135298989 is 989892531.

135298989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135298989 - 2¹⁷ = 135167917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135298589) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3052 + ... + 16730.

It is an arithmetic number, because the mean of its divisors is an integer number (9366240).

Almost surely, 2^135298989 is an apocalyptic number.

It is an amenable number.

135298989 is a deficient number, since it is larger than the sum of its proper divisors (89490771).

135298989 is a wasteful number, since it uses less digits than its factorization.

135298989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13849 (or 13846 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 54.

The square root of 135298989 is about 11631.8093605423. The cubic root of 135298989 is about 513.3712188358.

The spelling of 135298989 in words is "one hundred thirty-five million, two hundred ninety-eight thousand, nine hundred eighty-nine".