135839290 has 16 divisors (see below), whose sum is σ = 244840968. Its totient is φ = 54262336.

The previous prime is 135839281. The next prime is 135839293. The reversal of 135839290 is 92938531.

It can be written as a sum of positive squares in 4 ways, for example, as 89094721 + 46744569 = 9439^2 + 6837^2 .

It is not an unprimeable number, because it can be changed into a prime (135839293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1057 + ... + 16516.

Almost surely, 2^135839290 is an apocalyptic number.

135839290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135839290 is a deficient number, since it is larger than the sum of its proper divisors (109001678).

135839290 is a wasteful number, since it uses less digits than its factorization.

135839290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18353.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 135839290 is about 11655.0113685058. The cubic root of 135839290 is about 514.0536742386.

The spelling of 135839290 in words is "one hundred thirty-five million, eight hundred thirty-nine thousand, two hundred ninety".