139436135 has 4 divisors (see below), whose sum is σ = 167323368. Its totient is φ = 111548904.

The previous prime is 139436123. The next prime is 139436153. The reversal of 139436135 is 531634931.

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

It is a cyclic number.

It is not a de Polignac number, because 139436135 - 2⁶ = 139436071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139436095 and 139436104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13943609 + ... + 13943618.

It is an arithmetic number, because the mean of its divisors is an integer number (41830842).

Almost surely, 2^139436135 is an apocalyptic number.

139436135 is a deficient number, since it is larger than the sum of its proper divisors (27887233).

139436135 is an equidigital number, since it uses as much as digits as its factorization.

139436135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27887232.

The product of its digits is 29160, while the sum is 35.

The square root of 139436135 is about 11808.3078804713. The cubic root of 139436135 is about 518.5513613113.

The spelling of 139436135 in words is "one hundred thirty-nine million, four hundred thirty-six thousand, one hundred thirty-five".