133777889 has 16 divisors (see below), whose sum is σ = 158016000. Its totient is φ = 113192352.

The previous prime is 133777873. The next prime is 133777951. The reversal of 133777889 is 988777331.

It is not a de Polignac number, because 133777889 - 2⁴ = 133777873 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 133777889.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133777789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24629 + ... + 29565.

It is an arithmetic number, because the mean of its divisors is an integer number (9876000).

Almost surely, 2^133777889 is an apocalyptic number.

It is an amenable number.

133777889 is a deficient number, since it is larger than the sum of its proper divisors (24238111).

133777889 is an frugal number, since it uses more digits than its factorization.

133777889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5037 (or 5023 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 53.

The square root of 133777889 is about 11566.2391899874. The cubic root of 133777889 is about 511.4401037399.

The spelling of 133777889 in words is "one hundred thirty-three million, seven hundred seventy-seven thousand, eight hundred eighty-nine".