135578889 has 24 divisors (see below), whose sum is σ = 207380160. Its totient is φ = 85115232.

The previous prime is 135578801. The next prime is 135578897. The reversal of 135578889 is 988875531.

135578889 is a `hidden beast` number, since 1 + 3 + 557 + 8 + 8 + 89 = 666.

It is not a de Polignac number, because 135578889 - 2⁸ = 135578633 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (135578089) 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, 27292 + ... + 31874.

It is an arithmetic number, because the mean of its divisors is an integer number (8640840).

Almost surely, 2^135578889 is an apocalyptic number.

135578889 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

135578889 is a deficient number, since it is larger than the sum of its proper divisors (71801271).

135578889 is a wasteful number, since it uses less digits than its factorization.

135578889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4781 (or 4778 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The square root of 135578889 is about 11643.8348064544. The cubic root of 135578889 is about 513.7249875048.

The spelling of 135578889 in words is "one hundred thirty-five million, five hundred seventy-eight thousand, eight hundred eighty-nine".