135909992 has 8 divisors (see below), whose sum is σ = 254831250. Its totient is φ = 67954992.

The previous prime is 135909989. The next prime is 135909997. The reversal of 135909992 is 299909531.

It can be written as a sum of positive squares in only one way, i.e., 113763556 + 22146436 = 10666^2 + 4706^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (135909997) 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 as a sum of consecutive naturals, namely, 8494367 + ... + 8494382.

Almost surely, 2^135909992 is an apocalyptic number.

It is an amenable number.

135909992 is a deficient number, since it is larger than the sum of its proper divisors (118921258).

135909992 is a wasteful number, since it uses less digits than its factorization.

135909992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16988755 (or 16988751 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 47.

The square root of 135909992 is about 11658.0440898120. The cubic root of 135909992 is about 514.1428441175.

The spelling of 135909992 in words is "one hundred thirty-five million, nine hundred nine thousand, nine hundred ninety-two".