135989683 has 2 divisors, whose sum is σ = 135989684. Its totient is φ = 135989682.

The previous prime is 135989657. The next prime is 135989687. The reversal of 135989683 is 386989531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135989683 - 2¹³ = 135981491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135989683.

It is not a weakly prime, because it can be changed into another prime (135989687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67994841 + 67994842.

It is an arithmetic number, because the mean of its divisors is an integer number (67994842).

Almost surely, 2^135989683 is an apocalyptic number.

135989683 is a deficient number, since it is larger than the sum of its proper divisors (1).

135989683 is an equidigital number, since it uses as much as digits as its factorization.

135989683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 52.

The square root of 135989683 is about 11661.4614435756. The cubic root of 135989683 is about 514.2433139243.

The spelling of 135989683 in words is "one hundred thirty-five million, nine hundred eighty-nine thousand, six hundred eighty-three".