135939764 has 12 divisors (see below), whose sum is σ = 243697188. Its totient is φ = 66312000.

The previous prime is 135939761. The next prime is 135939773. The reversal of 135939764 is 467939531.

It can be written as a sum of positive squares in 2 ways, for example, as 44890000 + 91049764 = 6700^2 + 9542^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135939761) 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, 414287 + ... + 414614.

It is an arithmetic number, because the mean of its divisors is an integer number (20308099).

Almost surely, 2^135939764 is an apocalyptic number.

It is an amenable number.

135939764 is a deficient number, since it is larger than the sum of its proper divisors (107757424).

135939764 is a wasteful number, since it uses less digits than its factorization.

135939764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828946 (or 828944 counting only the distinct ones).

The product of its digits is 612360, while the sum is 47.

The square root of 135939764 is about 11659.3209064679. The cubic root of 135939764 is about 514.1803835286.

The spelling of 135939764 in words is "one hundred thirty-five million, nine hundred thirty-nine thousand, seven hundred sixty-four".