136869437 has 2 divisors, whose sum is σ = 136869438. Its totient is φ = 136869436.

The previous prime is 136869413. The next prime is 136869449. The reversal of 136869437 is 734968631.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68790436 + 68079001 = 8294^2 + 8251^2 .

It is a cyclic number.

It is not a de Polignac number, because 136869437 - 2²⁴ = 120092221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 136869391 and 136869400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136869457) 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, 68434718 + 68434719.

It is an arithmetic number, because the mean of its divisors is an integer number (68434719).

Almost surely, 2^136869437 is an apocalyptic number.

It is an amenable number.

136869437 is a deficient number, since it is larger than the sum of its proper divisors (1).

136869437 is an equidigital number, since it uses as much as digits as its factorization.

136869437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 136869437 is about 11699.1212063129. The cubic root of 136869437 is about 515.3498574780.

The spelling of 136869437 in words is "one hundred thirty-six million, eight hundred sixty-nine thousand, four hundred thirty-seven".