135057939 has 16 divisors (see below), whose sum is σ = 185123232. Its totient is φ = 87546368.

The previous prime is 135057929. The next prime is 135057941. The reversal of 135057939 is 939750531.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 135057939 - 2⁹ = 135057427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135057939.

It is not an unprimeable number, because it can be changed into a prime (135057929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14209 + ... + 21725.

It is an arithmetic number, because the mean of its divisors is an integer number (11570202).

Almost surely, 2^135057939 is an apocalyptic number.

135057939 is a deficient number, since it is larger than the sum of its proper divisors (50065293).

135057939 is a wasteful number, since it uses less digits than its factorization.

135057939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7686.

The product of its (nonzero) digits is 127575, while the sum is 42.

The square root of 135057939 is about 11621.4430687415. The cubic root of 135057939 is about 513.0661618743.

The spelling of 135057939 in words is "one hundred thirty-five million, fifty-seven thousand, nine hundred thirty-nine".