136709899 has 2 divisors, whose sum is σ = 136709900. Its totient is φ = 136709898.

The previous prime is 136709891. The next prime is 136709917. The reversal of 136709899 is 998907631.

It is a weak prime.

It is an emirp because it is prime and its reverse (998907631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136709899 - 2³ = 136709891 is a prime.

It is not a weakly prime, because it can be changed into another prime (136709891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68354949 + 68354950.

It is an arithmetic number, because the mean of its divisors is an integer number (68354950).

Almost surely, 2^136709899 is an apocalyptic number.

136709899 is a deficient number, since it is larger than the sum of its proper divisors (1).

136709899 is an equidigital number, since it uses as much as digits as its factorization.

136709899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 136709899 is about 11692.3008428624. The cubic root of 136709899 is about 515.1495452849.

Adding to 136709899 its product of nonzero digits (734832), we get a palindrome (137444731).

The spelling of 136709899 in words is "one hundred thirty-six million, seven hundred nine thousand, eight hundred ninety-nine".