133943477 has 2 divisors, whose sum is σ = 133943478. Its totient is φ = 133943476.

The previous prime is 133943449. The next prime is 133943479. The reversal of 133943477 is 774349331.

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., 75359761 + 58583716 = 8681^2 + 7654^2 .

It is a cyclic number.

It is not a de Polignac number, because 133943477 - 2¹⁰ = 133942453 is a prime.

Together with 133943479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133943479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66971738 + 66971739.

It is an arithmetic number, because the mean of its divisors is an integer number (66971739).

Almost surely, 2^133943477 is an apocalyptic number.

It is an amenable number.

133943477 is a deficient number, since it is larger than the sum of its proper divisors (1).

133943477 is an equidigital number, since it uses as much as digits as its factorization.

133943477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 41.

The square root of 133943477 is about 11573.3952235288. The cubic root of 133943477 is about 511.6510340279.

The spelling of 133943477 in words is "one hundred thirty-three million, nine hundred forty-three thousand, four hundred seventy-seven".