133444963 has 2 divisors, whose sum is σ = 133444964. Its totient is φ = 133444962.

The previous prime is 133444957. The next prime is 133444991. The reversal of 133444963 is 369444331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133444963 - 2⁵ = 133444931 is a prime.

It is not a weakly prime, because it can be changed into another prime (133454963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66722481 + 66722482.

It is an arithmetic number, because the mean of its divisors is an integer number (66722482).

Almost surely, 2^133444963 is an apocalyptic number.

133444963 is a deficient number, since it is larger than the sum of its proper divisors (1).

133444963 is an equidigital number, since it uses as much as digits as its factorization.

133444963 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 37.

The square root of 133444963 is about 11551.8380788513. The cubic root of 133444963 is about 511.0154866037.

It can be divided in two parts, 133 and 444963, that added together give a triangular number (445096 = T₉₄₃).

The spelling of 133444963 in words is "one hundred thirty-three million, four hundred forty-four thousand, nine hundred sixty-three".