136699393 has 2 divisors, whose sum is σ = 136699394. Its totient is φ = 136699392.

The previous prime is 136699351. The next prime is 136699403. The reversal of 136699393 is 393996631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97160449 + 39538944 = 9857^2 + 6288^2 .

It is a cyclic number.

It is not a de Polignac number, because 136699393 - 2¹⁷ = 136568321 is a prime.

It is not a weakly prime, because it can be changed into another prime (136699313) 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 as a sum of consecutive naturals, namely, 68349696 + 68349697.

It is an arithmetic number, because the mean of its divisors is an integer number (68349697).

Almost surely, 2^136699393 is an apocalyptic number.

It is an amenable number.

136699393 is a deficient number, since it is larger than the sum of its proper divisors (1).

136699393 is an equidigital number, since it uses as much as digits as its factorization.

136699393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 708588, while the sum is 49.

The square root of 136699393 is about 11691.8515642305. The cubic root of 136699393 is about 515.1363487283.

The spelling of 136699393 in words is "one hundred thirty-six million, six hundred ninety-nine thousand, three hundred ninety-three".