135456899 has 2 divisors, whose sum is σ = 135456900. Its totient is φ = 135456898.

The previous prime is 135456863. The next prime is 135456917. The reversal of 135456899 is 998654531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135456899 - 2¹² = 135452803 is a prime.

It is not a weakly prime, because it can be changed into another prime (135456859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67728449 + 67728450.

It is an arithmetic number, because the mean of its divisors is an integer number (67728450).

Almost surely, 2^135456899 is an apocalyptic number.

135456899 is a deficient number, since it is larger than the sum of its proper divisors (1).

135456899 is an equidigital number, since it uses as much as digits as its factorization.

135456899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 50.

The square root of 135456899 is about 11638.5952331027. The cubic root of 135456899 is about 513.5708629281.

The spelling of 135456899 in words is "one hundred thirty-five million, four hundred fifty-six thousand, eight hundred ninety-nine".