133091839 has 2 divisors, whose sum is σ = 133091840. Its totient is φ = 133091838.

The previous prime is 133091831. The next prime is 133091873. The reversal of 133091839 is 938190331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133091839 - 2³ = 133091831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133091798 and 133091807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133091831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66545919 + 66545920.

It is an arithmetic number, because the mean of its divisors is an integer number (66545920).

Almost surely, 2^133091839 is an apocalyptic number.

133091839 is a deficient number, since it is larger than the sum of its proper divisors (1).

133091839 is an equidigital number, since it uses as much as digits as its factorization.

133091839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 133091839 is about 11536.5436331685. The cubic root of 133091839 is about 510.5643362206.

The spelling of 133091839 in words is "one hundred thirty-three million, ninety-one thousand, eight hundred thirty-nine".