133861447 has 2 divisors, whose sum is σ = 133861448. Its totient is φ = 133861446.

The previous prime is 133861439. The next prime is 133861459. The reversal of 133861447 is 744168331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133861447 - 2³ = 133861439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133861747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66930723 + 66930724.

It is an arithmetic number, because the mean of its divisors is an integer number (66930724).

Almost surely, 2^133861447 is an apocalyptic number.

133861447 is a deficient number, since it is larger than the sum of its proper divisors (1).

133861447 is an equidigital number, since it uses as much as digits as its factorization.

133861447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 133861447 is about 11569.8507769115. The cubic root of 133861447 is about 511.5465638287.

The spelling of 133861447 in words is "one hundred thirty-three million, eight hundred sixty-one thousand, four hundred forty-seven".