135702989 has 4 divisors (see below), whose sum is σ = 139012860. Its totient is φ = 132393120.

The previous prime is 135702947. The next prime is 135702991. The reversal of 135702989 is 989207531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53655625 + 82047364 = 7325^2 + 9058^2 .

It is a cyclic number.

It is not a de Polignac number, because 135702989 - 2⁸ = 135702733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135702689) 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 3 ways as a sum of consecutive naturals, for example, 1654874 + ... + 1654955.

It is an arithmetic number, because the mean of its divisors is an integer number (34753215).

Almost surely, 2^135702989 is an apocalyptic number.

It is an amenable number.

135702989 is a deficient number, since it is larger than the sum of its proper divisors (3309871).

135702989 is an equidigital number, since it uses as much as digits as its factorization.

135702989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309870.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 135702989 is about 11649.1625879288. The cubic root of 135702989 is about 513.8816830628.

The spelling of 135702989 in words is "one hundred thirty-five million, seven hundred two thousand, nine hundred eighty-nine".