135441939 has 4 divisors (see below), whose sum is σ = 180589256. Its totient is φ = 90294624.

The previous prime is 135441931. The next prime is 135441947. The reversal of 135441939 is 939144531.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (135441931) and next prime (135441947).

It is not a de Polignac number, because 135441939 - 2³ = 135441931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135441897 and 135441906.

It is not an unprimeable number, because it can be changed into a prime (135441931) 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 3 ways as a sum of consecutive naturals, for example, 22573654 + ... + 22573659.

It is an arithmetic number, because the mean of its divisors is an integer number (45147314).

Almost surely, 2^135441939 is an apocalyptic number.

135441939 is a deficient number, since it is larger than the sum of its proper divisors (45147317).

135441939 is an equidigital number, since it uses as much as digits as its factorization.

135441939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45147316.

The product of its digits is 58320, while the sum is 39.

The square root of 135441939 is about 11637.9525261104. The cubic root of 135441939 is about 513.5519557996.

The spelling of 135441939 in words is "one hundred thirty-five million, four hundred forty-one thousand, nine hundred thirty-nine".