133109993 has 4 divisors (see below), whose sum is σ = 138897408. Its totient is φ = 127322580.

The previous prime is 133109989. The next prime is 133110011. The reversal of 133109993 is 399901331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133109993 - 2² = 133109989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133109293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2893673 + ... + 2893718.

It is an arithmetic number, because the mean of its divisors is an integer number (34724352).

Almost surely, 2^133109993 is an apocalyptic number.

It is an amenable number.

133109993 is a deficient number, since it is larger than the sum of its proper divisors (5787415).

133109993 is an equidigital number, since it uses as much as digits as its factorization.

133109993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5787414.

The product of its (nonzero) digits is 19683, while the sum is 38.

The square root of 133109993 is about 11537.3304104546. The cubic root of 133109993 is about 510.5875491730.

The spelling of 133109993 in words is "one hundred thirty-three million, one hundred nine thousand, nine hundred ninety-three".