133078399 has 2 divisors, whose sum is σ = 133078400. Its totient is φ = 133078398.

The previous prime is 133078367. The next prime is 133078403. The reversal of 133078399 is 993870331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133078399 - 2⁵ = 133078367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133078199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66539199 + 66539200.

It is an arithmetic number, because the mean of its divisors is an integer number (66539200).

Almost surely, 2^133078399 is an apocalyptic number.

133078399 is a deficient number, since it is larger than the sum of its proper divisors (1).

133078399 is an equidigital number, since it uses as much as digits as its factorization.

133078399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 133078399 is about 11535.9611216405. The cubic root of 133078399 is about 510.5471495528.

The spelling of 133078399 in words is "one hundred thirty-three million, seventy-eight thousand, three hundred ninety-nine".