136998859 has 2 divisors, whose sum is σ = 136998860. Its totient is φ = 136998858.

The previous prime is 136998839. The next prime is 136998899. The reversal of 136998859 is 958899631.

It is a weak prime.

It is an emirp because it is prime and its reverse (958899631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136998859 - 2⁹ = 136998347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (136998809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68499429 + 68499430.

It is an arithmetic number, because the mean of its divisors is an integer number (68499430).

Almost surely, 2^136998859 is an apocalyptic number.

136998859 is a deficient number, since it is larger than the sum of its proper divisors (1).

136998859 is an equidigital number, since it uses as much as digits as its factorization.

136998859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4199040, while the sum is 58.

The square root of 136998859 is about 11704.6511695138. The cubic root of 136998859 is about 515.5122423974.

The spelling of 136998859 in words is "one hundred thirty-six million, nine hundred ninety-eight thousand, eight hundred fifty-nine".