135940938 has 16 divisors (see below), whose sum is σ = 310722240. Its totient is φ = 38840256.

The previous prime is 135940913. The next prime is 135940939. The reversal of 135940938 is 839049531.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 3236689 = 135940938 / (1 + 3 + 5 + 9 + 4 + 0 + 9 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 135940938.

It is not an unprimeable number, because it can be changed into a prime (135940939) 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, 1618303 + ... + 1618386.

It is an arithmetic number, because the mean of its divisors is an integer number (19420140).

Almost surely, 2^135940938 is an apocalyptic number.

135940938 is an abundant number, since it is smaller than the sum of its proper divisors (174781302).

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

135940938 is a wasteful number, since it uses less digits than its factorization.

135940938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3236701.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 135940938 is about 11659.3712523446. The cubic root of 135940938 is about 514.1818637088.

The spelling of 135940938 in words is "one hundred thirty-five million, nine hundred forty thousand, nine hundred thirty-eight".