135989827 has 2 divisors, whose sum is σ = 135989828. Its totient is φ = 135989826.

The previous prime is 135989813. The next prime is 135989873. The reversal of 135989827 is 728989531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135989827 - 2²³ = 127601219 is a prime.

It is not a weakly prime, because it can be changed into another prime (135989527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67994913 + 67994914.

It is an arithmetic number, because the mean of its divisors is an integer number (67994914).

Almost surely, 2^135989827 is an apocalyptic number.

135989827 is a deficient number, since it is larger than the sum of its proper divisors (1).

135989827 is an equidigital number, since it uses as much as digits as its factorization.

135989827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 52.

The square root of 135989827 is about 11661.4676177572. The cubic root of 135989827 is about 514.2434954356.

The spelling of 135989827 in words is "one hundred thirty-five million, nine hundred eighty-nine thousand, eight hundred twenty-seven".