133769 has 2 divisors, whose sum is σ = 133770. Its totient is φ = 133768.

The previous prime is 133733. The next prime is 133781. The reversal of 133769 is 967331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126025 + 7744 = 355^2 + 88^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133769 is a prime.

It is a super-2 number, since 2×133769² = 35788290722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66884 + 66885.

It is an arithmetic number, because the mean of its divisors is an integer number (66885).

2¹³³⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

133769 is a deficient number, since it is larger than the sum of its proper divisors (1).

133769 is an equidigital number, since it uses as much as digits as its factorization.

133769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 29.

The square root of 133769 is about 365.7444463010. The cubic root of 133769 is about 51.1428775780.

The spelling of 133769 in words is "one hundred thirty-three thousand, seven hundred sixty-nine".