136844477 has 16 divisors (see below), whose sum is σ = 173021184. Its totient is φ = 105126000.

The previous prime is 136844473. The next prime is 136844489. The reversal of 136844477 is 774448631.

It is not a de Polignac number, because 136844477 - 2² = 136844473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136844473) 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 15 ways as a sum of consecutive naturals, for example, 7049 + ... + 17982.

It is an arithmetic number, because the mean of its divisors is an integer number (10813824).

Almost surely, 2^136844477 is an apocalyptic number.

It is an amenable number.

136844477 is a deficient number, since it is larger than the sum of its proper divisors (36176707).

136844477 is a wasteful number, since it uses less digits than its factorization.

136844477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25120.

The product of its digits is 451584, while the sum is 44.

The square root of 136844477 is about 11698.0544108839. The cubic root of 136844477 is about 515.3185285591.

The spelling of 136844477 in words is "one hundred thirty-six million, eight hundred forty-four thousand, four hundred seventy-seven".