136397039 has 4 divisors (see below), whose sum is σ = 137929680. Its totient is φ = 134864400.

The previous prime is 136397003. The next prime is 136397057. The reversal of 136397039 is 930793631.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136397039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136396987 and 136397005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136397099) 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, 766187 + ... + 766364.

It is an arithmetic number, because the mean of its divisors is an integer number (34482420).

Almost surely, 2^136397039 is an apocalyptic number.

136397039 is a deficient number, since it is larger than the sum of its proper divisors (1532641).

136397039 is an equidigital number, since it uses as much as digits as its factorization.

136397039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532640.

The product of its (nonzero) digits is 91854, while the sum is 41.

The square root of 136397039 is about 11678.9142902926. The cubic root of 136397039 is about 514.7562726450.

The spelling of 136397039 in words is "one hundred thirty-six million, three hundred ninety-seven thousand, thirty-nine".