133349992 has 8 divisors (see below), whose sum is σ = 250031250. Its totient is φ = 66674992.

The previous prime is 133349987. The next prime is 133350011. The reversal of 133349992 is 299943331.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 121749156 + 11600836 = 11034^2 + 3406^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8334367 + ... + 8334382.

Almost surely, 2^133349992 is an apocalyptic number.

It is an amenable number.

133349992 is a deficient number, since it is larger than the sum of its proper divisors (116681258).

133349992 is a wasteful number, since it uses less digits than its factorization.

133349992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16668755 (or 16668751 counting only the distinct ones).

The product of its digits is 157464, while the sum is 43.

The square root of 133349992 is about 11547.7267026891. The cubic root of 133349992 is about 510.8942301987.

The spelling of 133349992 in words is "one hundred thirty-three million, three hundred forty-nine thousand, nine hundred ninety-two".