135990448 has 60 divisors (see below), whose sum is σ = 304937080. Its totient is φ = 58544640.

The previous prime is 135990443. The next prime is 135990451. The reversal of 135990448 is 844099531.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (135990443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34936 + ... + 38632.

Almost surely, 2^135990448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135990448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152468540).

135990448 is an abundant number, since it is smaller than the sum of its proper divisors (168946632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135990448 is a wasteful number, since it uses less digits than its factorization.

135990448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3746 (or 3729 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 135990448 is about 11661.4942438780. The cubic root of 135990448 is about 514.2442782018.

The spelling of 135990448 in words is "one hundred thirty-five million, nine hundred ninety thousand, four hundred forty-eight".