133989959 has 2 divisors, whose sum is σ = 133989960. Its totient is φ = 133989958.

The previous prime is 133989949. The next prime is 133990007. The reversal of 133989959 is 959989331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133989959 - 2⁴ = 133989943 is a prime.

It is a super-2 number, since 2×133989959² = 35906618225643362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133989949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66994979 + 66994980.

It is an arithmetic number, because the mean of its divisors is an integer number (66994980).

Almost surely, 2^133989959 is an apocalyptic number.

133989959 is a deficient number, since it is larger than the sum of its proper divisors (1).

133989959 is an equidigital number, since it uses as much as digits as its factorization.

133989959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2361960, while the sum is 56.

The square root of 133989959 is about 11575.4031895222. The cubic root of 133989959 is about 511.7102127536.

The spelling of 133989959 in words is "one hundred thirty-three million, nine hundred eighty-nine thousand, nine hundred fifty-nine".