136343889 has 18 divisors (see below), whose sum is σ = 216474258. Its totient is φ = 82632000.

The previous prime is 136343887. The next prime is 136343903. The reversal of 136343889 is 988343631.

136343889 is a `hidden beast` number, since 1 + 3 + 634 + 3 + 8 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 111513600 + 24830289 = 10560^2 + 4983^2 .

It is not a de Polignac number, because 136343889 - 2¹ = 136343887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136343887) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 61512 + ... + 63689.

Almost surely, 2^136343889 is an apocalyptic number.

It is an amenable number.

136343889 is a deficient number, since it is larger than the sum of its proper divisors (80130369).

136343889 is a wasteful number, since it uses less digits than its factorization.

136343889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125229 (or 125215 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 136343889 is about 11676.6386002137. The cubic root of 136343889 is about 514.6894020576.

The spelling of 136343889 in words is "one hundred thirty-six million, three hundred forty-three thousand, eight hundred eighty-nine".