135998049 has 8 divisors (see below), whose sum is σ = 197815392. Its totient is φ = 82423040.

The previous prime is 135998047. The next prime is 135998063. The reversal of 135998049 is 940899531.

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

It is a cyclic number.

It is not a de Polignac number, because 135998049 - 2¹ = 135998047 is a prime.

It is a super-3 number, since 3×135998049³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 135997989 and 135998007.

It is not an unprimeable number, because it can be changed into a prime (135998041) 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, 2060544 + ... + 2060609.

It is an arithmetic number, because the mean of its divisors is an integer number (24726924).

Almost surely, 2^135998049 is an apocalyptic number.

It is an amenable number.

135998049 is a deficient number, since it is larger than the sum of its proper divisors (61817343).

135998049 is a wasteful number, since it uses less digits than its factorization.

135998049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121167.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 135998049 is about 11661.8201409557. The cubic root of 135998049 is about 514.2538590168.

The spelling of 135998049 in words is "one hundred thirty-five million, nine hundred ninety-eight thousand, forty-nine".