136885447 has 4 divisors (see below), whose sum is σ = 136909080. Its totient is φ = 136861816.

The previous prime is 136885409. The next prime is 136885453. The reversal of 136885447 is 744588631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 744588631 = 61 ⋅12206371.

It is a cyclic number.

It is not a de Polignac number, because 136885447 - 2⁷ = 136885319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136885397 and 136885406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136885477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3429 + ... + 16897.

It is an arithmetic number, because the mean of its divisors is an integer number (34227270).

Almost surely, 2^136885447 is an apocalyptic number.

136885447 is a deficient number, since it is larger than the sum of its proper divisors (23633).

136885447 is a wasteful number, since it uses less digits than its factorization.

136885447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23632.

The product of its digits is 645120, while the sum is 46.

The square root of 136885447 is about 11699.8054257325. The cubic root of 136885447 is about 515.3699506649.

The spelling of 136885447 in words is "one hundred thirty-six million, eight hundred eighty-five thousand, four hundred forty-seven".