133494993 has 32 divisors (see below), whose sum is σ = 205516800. Its totient is φ = 85578768.

The previous prime is 133494983. The next prime is 133495003. The reversal of 133494993 is 399494331.

It is an interprime number because it is at equal distance from previous prime (133494983) and next prime (133495003).

It is not a de Polignac number, because 133494993 - 2⁶ = 133494929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133494983) 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 in 31 ways as a sum of consecutive naturals, for example, 73980 + ... + 75762.

It is an arithmetic number, because the mean of its divisors is an integer number (6422400).

Almost surely, 2^133494993 is an apocalyptic number.

It is an amenable number.

133494993 is a deficient number, since it is larger than the sum of its proper divisors (72021807).

133494993 is a wasteful number, since it uses less digits than its factorization.

133494993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898 (or 1892 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 133494993 is about 11554.0033321789. The cubic root of 133494993 is about 511.0793404200.

The spelling of 133494993 in words is "one hundred thirty-three million, four hundred ninety-four thousand, nine hundred ninety-three".