133461389 has 2 divisors, whose sum is σ = 133461390. Its totient is φ = 133461388.

The previous prime is 133461353. The next prime is 133461397. The reversal of 133461389 is 983164331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131285764 + 2175625 = 11458^2 + 1475^2 .

It is an emirp because it is prime and its reverse (983164331) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133461389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133461319) 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 as a sum of consecutive naturals, namely, 66730694 + 66730695.

It is an arithmetic number, because the mean of its divisors is an integer number (66730695).

Almost surely, 2^133461389 is an apocalyptic number.

It is an amenable number.

133461389 is a deficient number, since it is larger than the sum of its proper divisors (1).

133461389 is an equidigital number, since it uses as much as digits as its factorization.

133461389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 38.

The square root of 133461389 is about 11552.5490260808. The cubic root of 133461389 is about 511.0364530401.

The spelling of 133461389 in words is "one hundred thirty-three million, four hundred sixty-one thousand, three hundred eighty-nine".