133976291 has 2 divisors, whose sum is σ = 133976292. Its totient is φ = 133976290.

The previous prime is 133976177. The next prime is 133976299. The reversal of 133976291 is 192679331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133976291 - 2¹⁰ = 133975267 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (133976299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66988145 + 66988146.

It is an arithmetic number, because the mean of its divisors is an integer number (66988146).

Almost surely, 2^133976291 is an apocalyptic number.

133976291 is a deficient number, since it is larger than the sum of its proper divisors (1).

133976291 is an equidigital number, since it uses as much as digits as its factorization.

133976291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236, while the sum is 41.

The square root of 133976291 is about 11574.8127846631. The cubic root of 133976291 is about 511.6928127109.

The spelling of 133976291 in words is "one hundred thirty-three million, nine hundred seventy-six thousand, two hundred ninety-one".