133299449 has 2 divisors, whose sum is σ = 133299450. Its totient is φ = 133299448.

The previous prime is 133299409. The next prime is 133299511. The reversal of 133299449 is 944992331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110670400 + 22629049 = 10520^2 + 4757^2 .

It is an emirp because it is prime and its reverse (944992331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133299449 - 2¹² = 133295353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133299409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66649724 + 66649725.

It is an arithmetic number, because the mean of its divisors is an integer number (66649725).

Almost surely, 2^133299449 is an apocalyptic number.

It is an amenable number.

133299449 is a deficient number, since it is larger than the sum of its proper divisors (1).

133299449 is an equidigital number, since it uses as much as digits as its factorization.

133299449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 44.

The square root of 133299449 is about 11545.5380558898. The cubic root of 133299449 is about 510.8296747888.

The spelling of 133299449 in words is "one hundred thirty-three million, two hundred ninety-nine thousand, four hundred forty-nine".