135971386 has 8 divisors (see below), whose sum is σ = 204146964. Its totient is φ = 67922400.

The previous prime is 135971383. The next prime is 135971387. The reversal of 135971386 is 683179531.

It can be written as a sum of positive squares in 2 ways, for example, as 135001161 + 970225 = 11619^2 + 985^2 .

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

It is not an unprimeable number, because it can be changed into a prime (135971383) 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 3 ways as a sum of consecutive naturals, for example, 28915 + ... + 33286.

Almost surely, 2^135971386 is an apocalyptic number.

135971386 is a deficient number, since it is larger than the sum of its proper divisors (68175578).

135971386 is a wasteful number, since it uses less digits than its factorization.

135971386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63296.

The product of its digits is 136080, while the sum is 43.

The square root of 135971386 is about 11660.6769100254. The cubic root of 135971386 is about 514.2202495964.

The spelling of 135971386 in words is "one hundred thirty-five million, nine hundred seventy-one thousand, three hundred eighty-six".