136049409 has 8 divisors (see below), whose sum is σ = 201554720. Its totient is φ = 90699588.

The previous prime is 136049383. The next prime is 136049413. The reversal of 136049409 is 904940631.

136049409 is a `hidden beast` number, since 1 + 3 + 604 + 9 + 40 + 9 = 666.

It is not a de Polignac number, because 136049409 - 2⁷ = 136049281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (136049479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2519407 + ... + 2519460.

It is an arithmetic number, because the mean of its divisors is an integer number (25194340).

Almost surely, 2^136049409 is an apocalyptic number.

It is an amenable number.

136049409 is a deficient number, since it is larger than the sum of its proper divisors (65505311).

136049409 is an equidigital number, since it uses as much as digits as its factorization.

136049409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038876 (or 5038870 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 136049409 is about 11664.0219907200. The cubic root of 136049409 is about 514.3185872836.

The spelling of 136049409 in words is "one hundred thirty-six million, forty-nine thousand, four hundred nine".