136408539 has 4 divisors (see below), whose sum is σ = 181878056. Its totient is φ = 90939024.

The previous prime is 136408507. The next prime is 136408553. The reversal of 136408539 is 935804631.

136408539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 935804631 = 3 ⋅311934877.

It is not a de Polignac number, because 136408539 - 2⁵ = 136408507 is a prime.

It is a super-2 number, since 2×136408539² = 37214579024229042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136408497 and 136408506.

It is not an unprimeable number, because it can be changed into a prime (136408579) 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, 22734754 + ... + 22734759.

It is an arithmetic number, because the mean of its divisors is an integer number (45469514).

Almost surely, 2^136408539 is an apocalyptic number.

136408539 is a deficient number, since it is larger than the sum of its proper divisors (45469517).

136408539 is an equidigital number, since it uses as much as digits as its factorization.

136408539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45469516.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 136408539 is about 11679.4066202012. The cubic root of 136408539 is about 514.7707390655.

The spelling of 136408539 in words is "one hundred thirty-six million, four hundred eight thousand, five hundred thirty-nine".