136738889 has 8 divisors (see below), whose sum is σ = 156477888. Its totient is φ = 117051120.

The previous prime is 136738883. The next prime is 136738891. The reversal of 136738889 is 988837631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136738889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136738889.

It is not an unprimeable number, because it can be changed into a prime (136738883) 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, 6902 + ... + 17919.

It is an arithmetic number, because the mean of its divisors is an integer number (19559736).

Almost surely, 2^136738889 is an apocalyptic number.

It is an amenable number.

136738889 is a deficient number, since it is larger than the sum of its proper divisors (19738999).

136738889 is an equidigital number, since it uses as much as digits as its factorization.

136738889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25615.

The product of its digits is 1741824, while the sum is 53.

The square root of 136738889 is about 11693.5404818216. The cubic root of 136738889 is about 515.1859560348.

The spelling of 136738889 in words is "one hundred thirty-six million, seven hundred thirty-eight thousand, eight hundred eighty-nine".