133959769 has 2 divisors, whose sum is σ = 133959770. Its totient is φ = 133959768.

The previous prime is 133959767. The next prime is 133959781. The reversal of 133959769 is 967959331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121286169 + 12673600 = 11013^2 + 3560^2 .

It is a cyclic number.

It is not a de Polignac number, because 133959769 - 2¹ = 133959767 is a prime.

It is a super-2 number, since 2×133959769² = 35890439421066722, which contains 22 as substring.

Together with 133959767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133959767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66979884 + 66979885.

It is an arithmetic number, because the mean of its divisors is an integer number (66979885).

Almost surely, 2^133959769 is an apocalyptic number.

It is an amenable number.

133959769 is a deficient number, since it is larger than the sum of its proper divisors (1).

133959769 is an equidigital number, since it uses as much as digits as its factorization.

133959769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1377810, while the sum is 52.

The square root of 133959769 is about 11574.0990578101. The cubic root of 133959769 is about 511.6717778045.

The spelling of 133959769 in words is "one hundred thirty-three million, nine hundred fifty-nine thousand, seven hundred sixty-nine".