136844453 has 4 divisors (see below), whose sum is σ = 137447520. Its totient is φ = 136241388.

The previous prime is 136844437. The next prime is 136844459. The reversal of 136844453 is 354448631.

It is a happy number.

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 an emirpimes, since its reverse is a distinct semiprime: 354448631 = 389 ⋅911179.

It is a cyclic number.

It is not a de Polignac number, because 136844453 - 2⁴ = 136844437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136844459) 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, 301193 + ... + 301646.

It is an arithmetic number, because the mean of its divisors is an integer number (34361880).

Almost surely, 2^136844453 is an apocalyptic number.

It is an amenable number.

136844453 is a deficient number, since it is larger than the sum of its proper divisors (603067).

136844453 is an equidigital number, since it uses as much as digits as its factorization.

136844453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603066.

The product of its digits is 138240, while the sum is 38.

The square root of 136844453 is about 11698.0533850722. The cubic root of 136844453 is about 515.3184984334.

The spelling of 136844453 in words is "one hundred thirty-six million, eight hundred forty-four thousand, four hundred fifty-three".