136496389 has 2 divisors, whose sum is σ = 136496390. Its totient is φ = 136496388.

The previous prime is 136496387. The next prime is 136496411. The reversal of 136496389 is 983694631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119727364 + 16769025 = 10942^2 + 4095^2 .

It is a cyclic number.

It is not a de Polignac number, because 136496389 - 2¹ = 136496387 is a prime.

Together with 136496387, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136496387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68248194 + 68248195.

It is an arithmetic number, because the mean of its divisors is an integer number (68248195).

Almost surely, 2^136496389 is an apocalyptic number.

It is an amenable number.

136496389 is a deficient number, since it is larger than the sum of its proper divisors (1).

136496389 is an equidigital number, since it uses as much as digits as its factorization.

136496389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 136496389 is about 11683.1669079920. The cubic root of 136496389 is about 514.8812231186.

The spelling of 136496389 in words is "one hundred thirty-six million, four hundred ninety-six thousand, three hundred eighty-nine".