135404449 has 2 divisors, whose sum is σ = 135404450. Its totient is φ = 135404448.

The previous prime is 135404441. The next prime is 135404461. The reversal of 135404449 is 944404531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122213025 + 13191424 = 11055^2 + 3632^2 .

It is a cyclic number.

It is not a de Polignac number, because 135404449 - 2³ = 135404441 is a prime.

It is not a weakly prime, because it can be changed into another prime (135404441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67702224 + 67702225.

It is an arithmetic number, because the mean of its divisors is an integer number (67702225).

Almost surely, 2^135404449 is an apocalyptic number.

It is an amenable number.

135404449 is a deficient number, since it is larger than the sum of its proper divisors (1).

135404449 is an equidigital number, since it uses as much as digits as its factorization.

135404449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 135404449 is about 11636.3417361300. The cubic root of 135404449 is about 513.5045681154.

The spelling of 135404449 in words is "one hundred thirty-five million, four hundred four thousand, four hundred forty-nine".