136574839 has 2 divisors, whose sum is σ = 136574840. Its totient is φ = 136574838.

The previous prime is 136574827. The next prime is 136574843. The reversal of 136574839 is 938475631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136574839 - 2¹¹ = 136572791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136574899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68287419 + 68287420.

It is an arithmetic number, because the mean of its divisors is an integer number (68287420).

Almost surely, 2^136574839 is an apocalyptic number.

136574839 is a deficient number, since it is larger than the sum of its proper divisors (1).

136574839 is an equidigital number, since it uses as much as digits as its factorization.

136574839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 136574839 is about 11686.5238201956. The cubic root of 136574839 is about 514.9798452539.

It can be divided in two parts, 13657 and 4839, that added together give a square (18496 = 136²).

The spelling of 136574839 in words is "one hundred thirty-six million, five hundred seventy-four thousand, eight hundred thirty-nine".