135559994 has 24 divisors (see below), whose sum is σ = 211490400. Its totient is φ = 65130912.

The previous prime is 135559967. The next prime is 135560011. The reversal of 135559994 is 499955531.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681107 + ... + 681305.

It is an arithmetic number, because the mean of its divisors is an integer number (8812100).

Almost surely, 2^135559994 is an apocalyptic number.

135559994 is a deficient number, since it is larger than the sum of its proper divisors (75930406).

135559994 is an equidigital number, since it uses as much as digits as its factorization.

135559994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 333 counting only the distinct ones).

The product of its digits is 1093500, while the sum is 50.

The square root of 135559994 is about 11643.0234045973. The cubic root of 135559994 is about 513.7011212410.

The spelling of 135559994 in words is "one hundred thirty-five million, five hundred fifty-nine thousand, nine hundred ninety-four".