133777944 has 48 divisors (see below), whose sum is σ = 363030720. Its totient is φ = 44504640.

The previous prime is 133777873. The next prime is 133777951. The reversal of 133777944 is 449777331.

133777944 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 133777944.

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, 42174 + ... + 45234.

It is an arithmetic number, because the mean of its divisors is an integer number (7563140).

Almost surely, 2^133777944 is an apocalyptic number.

It is an amenable number.

133777944 is an abundant number, since it is smaller than the sum of its proper divisors (229252776).

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

133777944 is a wasteful number, since it uses less digits than its factorization.

133777944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3680 (or 3673 counting only the distinct ones).

The product of its digits is 444528, while the sum is 45.

The square root of 133777944 is about 11566.2415675966. The cubic root of 133777944 is about 511.4401738292.

It can be divided in two parts, 13377 and 7944, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 133777944 in words is "one hundred thirty-three million, seven hundred seventy-seven thousand, nine hundred forty-four".