133219993 has 2 divisors, whose sum is σ = 133219994. Its totient is φ = 133219992.

The previous prime is 133219981. The next prime is 133220011. The reversal of 133219993 is 399912331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118984464 + 14235529 = 10908^2 + 3773^2 .

It is a cyclic number.

It is not a de Polignac number, because 133219993 - 2⁹ = 133219481 is a prime.

It is not a weakly prime, because it can be changed into another prime (133219903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66609996 + 66609997.

It is an arithmetic number, because the mean of its divisors is an integer number (66609997).

Almost surely, 2^133219993 is an apocalyptic number.

It is an amenable number.

133219993 is a deficient number, since it is larger than the sum of its proper divisors (1).

133219993 is an equidigital number, since it uses as much as digits as its factorization.

133219993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39366, while the sum is 40.

The square root of 133219993 is about 11542.0965599842. The cubic root of 133219993 is about 510.7281576153.

The spelling of 133219993 in words is "one hundred thirty-three million, two hundred nineteen thousand, nine hundred ninety-three".