133908944 has 60 divisors (see below), whose sum is σ = 292322436. Its totient is φ = 59068416.

The previous prime is 133908893. The next prime is 133909001. The reversal of 133908944 is 449809331.

It can be written as a sum of positive squares in 2 ways, for example, as 31494544 + 102414400 = 5612^2 + 10120^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109424 + ... + 110640.

Almost surely, 2^133908944 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 133908944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146161218).

133908944 is an abundant number, since it is smaller than the sum of its proper divisors (158413492).

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

133908944 is a wasteful number, since it uses less digits than its factorization.

133908944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 133908944 is about 11571.9032142513. The cubic root of 133908944 is about 511.6070593499.

The spelling of 133908944 in words is "one hundred thirty-three million, nine hundred eight thousand, nine hundred forty-four".