135999922 has 8 divisors (see below), whose sum is σ = 206582400. Its totient is φ = 67139124.

The previous prime is 135999887. The next prime is 135999923. The reversal of 135999922 is 229999531.

It is a happy number.

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 (135999923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430222 + ... + 430537.

It is an arithmetic number, because the mean of its divisors is an integer number (25822800).

Almost surely, 2^135999922 is an apocalyptic number.

135999922 is a deficient number, since it is larger than the sum of its proper divisors (70582478).

135999922 is an equidigital number, since it uses as much as digits as its factorization.

135999922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860840.

The product of its digits is 393660, while the sum is 49.

The square root of 135999922 is about 11661.9004454677. The cubic root of 135999922 is about 514.2562198179.

The spelling of 135999922 in words is "one hundred thirty-five million, nine hundred ninety-nine thousand, nine hundred twenty-two".