136443441 has 4 divisors (see below), whose sum is σ = 181924592. Its totient is φ = 90962292.

The previous prime is 136443421. The next prime is 136443481. The reversal of 136443441 is 144344631.

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: 144344631 = 3 ⋅48114877.

It is not a de Polignac number, because 136443441 - 2²³ = 128054833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 136443399 and 136443408.

It is not an unprimeable number, because it can be changed into a prime (136443421) 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, 22740571 + ... + 22740576.

It is an arithmetic number, because the mean of its divisors is an integer number (45481148).

Almost surely, 2^136443441 is an apocalyptic number.

It is an amenable number.

136443441 is a deficient number, since it is larger than the sum of its proper divisors (45481151).

136443441 is an equidigital number, since it uses as much as digits as its factorization.

136443441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45481150.

The product of its digits is 13824, while the sum is 30.

The square root of 136443441 is about 11680.9006930116. The cubic root of 136443441 is about 514.8146390451.

The spelling of 136443441 in words is "one hundred thirty-six million, four hundred forty-three thousand, four hundred forty-one".