135469489 has 2 divisors, whose sum is σ = 135469490. Its totient is φ = 135469488.

The previous prime is 135469483. The next prime is 135469513. The reversal of 135469489 is 984964531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114383025 + 21086464 = 10695^2 + 4592^2 .

It is a cyclic number.

It is not a de Polignac number, because 135469489 - 2⁵ = 135469457 is a prime.

It is a super-2 number, since 2×135469489² = 36703964899842242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (135469483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67734744 + 67734745.

It is an arithmetic number, because the mean of its divisors is an integer number (67734745).

Almost surely, 2^135469489 is an apocalyptic number.

It is an amenable number.

135469489 is a deficient number, since it is larger than the sum of its proper divisors (1).

135469489 is an equidigital number, since it uses as much as digits as its factorization.

135469489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 135469489 is about 11639.1360933705. The cubic root of 135469489 is about 513.5867736640.

The spelling of 135469489 in words is "one hundred thirty-five million, four hundred sixty-nine thousand, four hundred eighty-nine".