133401439 has 2 divisors, whose sum is σ = 133401440. Its totient is φ = 133401438.

The previous prime is 133401409. The next prime is 133401461. The reversal of 133401439 is 934104331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133401439 - 2¹⁷ = 133270367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133401409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66700719 + 66700720.

It is an arithmetic number, because the mean of its divisors is an integer number (66700720).

Almost surely, 2^133401439 is an apocalyptic number.

133401439 is a deficient number, since it is larger than the sum of its proper divisors (1).

133401439 is an equidigital number, since it uses as much as digits as its factorization.

133401439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 133401439 is about 11549.9540691727. The cubic root of 133401439 is about 510.9599234810.

The spelling of 133401439 in words is "one hundred thirty-three million, four hundred one thousand, four hundred thirty-nine".