133799901 has 32 divisors (see below), whose sum is σ = 191987712. Its totient is φ = 82695360.

The previous prime is 133799879. The next prime is 133799903. The reversal of 133799901 is 109997331.

It is not a de Polignac number, because 133799901 - 2⁶ = 133799837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133799903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349156 + ... + 349538.

It is an arithmetic number, because the mean of its divisors is an integer number (5999616).

Almost surely, 2^133799901 is an apocalyptic number.

It is an amenable number.

133799901 is a deficient number, since it is larger than the sum of its proper divisors (58187811).

133799901 is a wasteful number, since it uses less digits than its factorization.

133799901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553.

The product of its (nonzero) digits is 45927, while the sum is 42.

The square root of 133799901 is about 11567.1907133928. The cubic root of 133799901 is about 511.4681532236.

The spelling of 133799901 in words is "one hundred thirty-three million, seven hundred ninety-nine thousand, nine hundred one".