136826869 has 4 divisors (see below), whose sum is σ = 138754080. Its totient is φ = 134899660.

The previous prime is 136826831. The next prime is 136826887. The reversal of 136826869 is 968628631.

It is a happy number.

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: 968628631 = 257 ⋅3768983.

It is a cyclic number.

It is not a de Polignac number, because 136826869 - 2⁷ = 136826741 is a prime.

It is a super-2 number, since 2×136826869² = 37443184160686322, 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 (136826819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963499 + ... + 963640.

It is an arithmetic number, because the mean of its divisors is an integer number (34688520).

Almost surely, 2^136826869 is an apocalyptic number.

It is an amenable number.

136826869 is a deficient number, since it is larger than the sum of its proper divisors (1927211).

136826869 is an equidigital number, since it uses as much as digits as its factorization.

136826869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927210.

The product of its digits is 746496, while the sum is 49.

The square root of 136826869 is about 11697.3017828899. The cubic root of 136826869 is about 515.2964253218.

The spelling of 136826869 in words is "one hundred thirty-six million, eight hundred twenty-six thousand, eight hundred sixty-nine".