136449967 has 4 divisors (see below), whose sum is σ = 136483200. Its totient is φ = 136416736.

The previous prime is 136449953. The next prime is 136449979. The reversal of 136449967 is 769944631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136449967 - 2¹¹ = 136447919 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136449967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136449917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9418 + ... + 19015.

It is an arithmetic number, because the mean of its divisors is an integer number (34120800).

Almost surely, 2^136449967 is an apocalyptic number.

136449967 is a deficient number, since it is larger than the sum of its proper divisors (33233).

136449967 is an equidigital number, since it uses as much as digits as its factorization.

136449967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33232.

The product of its digits is 979776, while the sum is 49.

The square root of 136449967 is about 11681.1800345684. The cubic root of 136449967 is about 514.8228466627.

The spelling of 136449967 in words is "one hundred thirty-six million, four hundred forty-nine thousand, nine hundred sixty-seven".