135409448 has 8 divisors (see below), whose sum is σ = 253892730. Its totient is φ = 67704720.

The previous prime is 135409433. The next prime is 135409459. The reversal of 135409448 is 844904531.

It can be written as a sum of positive squares in only one way, i.e., 88322404 + 47087044 = 9398^2 + 6862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8463083 + ... + 8463098.

Almost surely, 2^135409448 is an apocalyptic number.

It is an amenable number.

135409448 is a deficient number, since it is larger than the sum of its proper divisors (118483282).

135409448 is a wasteful number, since it uses less digits than its factorization.

135409448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16926187 (or 16926183 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 135409448 is about 11636.5565353330. The cubic root of 135409448 is about 513.5108874000.

The spelling of 135409448 in words is "one hundred thirty-five million, four hundred nine thousand, four hundred forty-eight".