136926397 has 2 divisors, whose sum is σ = 136926398. Its totient is φ = 136926396.

The previous prime is 136926389. The next prime is 136926403. The reversal of 136926397 is 793629631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136913401 + 12996 = 11701^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 136926397 - 2³ = 136926389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136926497) by changing a digit.

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 as a sum of consecutive naturals, namely, 68463198 + 68463199.

It is an arithmetic number, because the mean of its divisors is an integer number (68463199).

Almost surely, 2^136926397 is an apocalyptic number.

It is an amenable number.

136926397 is a deficient number, since it is larger than the sum of its proper divisors (1).

136926397 is an equidigital number, since it uses as much as digits as its factorization.

136926397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 46.

The square root of 136926397 is about 11701.5553239730. Note that the first 3 decimals coincide. The cubic root of 136926397 is about 515.4213374163.

The spelling of 136926397 in words is "one hundred thirty-six million, nine hundred twenty-six thousand, three hundred ninety-seven".