136989017 has 4 divisors (see below), whose sum is σ = 149442576. Its totient is φ = 124535460.

The previous prime is 136988987. The next prime is 136989019. The reversal of 136989017 is 710989631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 710989631 = 11 ⋅64635421.

It is a cyclic number.

It is not a de Polignac number, because 136989017 - 2¹² = 136984921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136989019) 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, 6226763 + ... + 6226784.

It is an arithmetic number, because the mean of its divisors is an integer number (37360644).

Almost surely, 2^136989017 is an apocalyptic number.

It is an amenable number.

136989017 is a deficient number, since it is larger than the sum of its proper divisors (12453559).

136989017 is a wasteful number, since it uses less digits than its factorization.

136989017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12453558.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 136989017 is about 11704.2307308084. The cubic root of 136989017 is about 515.4998972994.

The spelling of 136989017 in words is "one hundred thirty-six million, nine hundred eighty-nine thousand, seventeen".