135949806 has 64 divisors (see below), whose sum is σ = 312076800. Its totient is φ = 43848000.

The previous prime is 135949763. The next prime is 135949819. The reversal of 135949806 is 608949531.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 225906 + ... + 226506.

It is an arithmetic number, because the mean of its divisors is an integer number (4876200).

Almost surely, 2^135949806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135949806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156038400).

135949806 is an abundant number, since it is smaller than the sum of its proper divisors (176126994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135949806 is a wasteful number, since it uses less digits than its factorization.

135949806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 135949806 is about 11659.7515410921. The cubic root of 135949806 is about 514.1930442153.

The spelling of 135949806 in words is "one hundred thirty-five million, nine hundred forty-nine thousand, eight hundred six".