136217869 has 4 divisors (see below), whose sum is σ = 136242144. Its totient is φ = 136193596.

The previous prime is 136217839. The next prime is 136217881. The reversal of 136217869 is 968712631.

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.

It is a cyclic number.

It is not a de Polignac number, because 136217869 - 2⁹ = 136217357 is a prime.

It is a super-2 number, since 2×136217869² = 37110615669802322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136217839) 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, 1074 + ... + 16540.

It is an arithmetic number, because the mean of its divisors is an integer number (34060536).

Almost surely, 2^136217869 is an apocalyptic number.

It is an amenable number.

136217869 is a deficient number, since it is larger than the sum of its proper divisors (24275).

136217869 is an equidigital number, since it uses as much as digits as its factorization.

136217869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24274.

The product of its digits is 108864, while the sum is 43.

The square root of 136217869 is about 11671.2411079542. The cubic root of 136217869 is about 514.5307807154.

The spelling of 136217869 in words is "one hundred thirty-six million, two hundred seventeen thousand, eight hundred sixty-nine".