136225439 has 12 divisors (see below), whose sum is σ = 163579968. Its totient is φ = 112996800.

The previous prime is 136225433. The next prime is 136225451. The reversal of 136225439 is 934522631.

136225439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-136225439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136225399 and 136225408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136225433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43322 + ... + 46359.

It is an arithmetic number, because the mean of its divisors is an integer number (13631664).

Almost surely, 2^136225439 is an apocalyptic number.

136225439 is a deficient number, since it is larger than the sum of its proper divisors (27354529).

136225439 is an equidigital number, since it uses as much as digits as its factorization.

136225439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89726 (or 89719 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 136225439 is about 11671.5654048632. The cubic root of 136225439 is about 514.5403118336.

The spelling of 136225439 in words is "one hundred thirty-six million, two hundred twenty-five thousand, four hundred thirty-nine".