135331839 has 12 divisors (see below), whose sum is σ = 203978736. Its totient is φ = 86298432.

The previous prime is 135331837. The next prime is 135331897. The reversal of 135331839 is 938133531.

It is a happy number.

It is not a de Polignac number, because 135331839 - 2¹ = 135331837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135331837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326682 + ... + 327095.

It is an arithmetic number, because the mean of its divisors is an integer number (16998228).

Almost surely, 2^135331839 is an apocalyptic number.

135331839 is a deficient number, since it is larger than the sum of its proper divisors (68646897).

135331839 is a wasteful number, since it uses less digits than its factorization.

135331839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653806 (or 653803 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 135331839 is about 11633.2213509414. The cubic root of 135331839 is about 513.4127635657.

The spelling of 135331839 in words is "one hundred thirty-five million, three hundred thirty-one thousand, eight hundred thirty-nine".