136469 has 4 divisors (see below), whose sum is σ = 137280. Its totient is φ = 135660.

The previous prime is 136463. The next prime is 136471. The reversal of 136469 is 964631.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 136469 - 2⁴ = 136453 is a prime.

It is a super-2 number, since 2×136469² = 37247575922, 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 (136463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47 + ... + 524.

It is an arithmetic number, because the mean of its divisors is an integer number (34320).

2¹³⁶⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

136469 is a deficient number, since it is larger than the sum of its proper divisors (811).

136469 is an equidigital number, since it uses as much as digits as its factorization.

136469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810.

The product of its digits is 3888, while the sum is 29.

The square root of 136469 is about 369.4171084289. The cubic root of 136469 is about 51.4846782586.

The spelling of 136469 in words is "one hundred thirty-six thousand, four hundred sixty-nine".