133896649 has 2 divisors, whose sum is σ = 133896650. Its totient is φ = 133896648.

The previous prime is 133896617. The next prime is 133896661. The reversal of 133896649 is 946698331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93954249 + 39942400 = 9693^2 + 6320^2 .

It is a cyclic number.

It is not a de Polignac number, because 133896649 - 2⁵ = 133896617 is a prime.

It is a super-2 number, since 2×133896649² = 35856625226858402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133896689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66948324 + 66948325.

It is an arithmetic number, because the mean of its divisors is an integer number (66948325).

Almost surely, 2^133896649 is an apocalyptic number.

It is an amenable number.

133896649 is a deficient number, since it is larger than the sum of its proper divisors (1).

133896649 is an equidigital number, since it uses as much as digits as its factorization.

133896649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 133896649 is about 11571.3719584153. The cubic root of 133896649 is about 511.5914009452.

The spelling of 133896649 in words is "one hundred thirty-three million, eight hundred ninety-six thousand, six hundred forty-nine".