136943329 has 2 divisors, whose sum is σ = 136943330. Its totient is φ = 136943328.

The previous prime is 136943299. The next prime is 136943369. The reversal of 136943329 is 923349631.

It is an a-pointer prime, because the next prime (136943369) can be obtained adding 136943329 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77035729 + 59907600 = 8777^2 + 7740^2 .

It is a cyclic number.

It is not a de Polignac number, because 136943329 - 2¹³ = 136935137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136943291 and 136943300.

It is not a weakly prime, because it can be changed into another prime (136943369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68471664 + 68471665.

It is an arithmetic number, because the mean of its divisors is an integer number (68471665).

Almost surely, 2^136943329 is an apocalyptic number.

It is an amenable number.

136943329 is a deficient number, since it is larger than the sum of its proper divisors (1).

136943329 is an equidigital number, since it uses as much as digits as its factorization.

136943329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 40.

The square root of 136943329 is about 11702.2787951749. The cubic root of 136943329 is about 515.4425818089.

The spelling of 136943329 in words is "one hundred thirty-six million, nine hundred forty-three thousand, three hundred twenty-nine".