133955898 has 16 divisors (see below), whose sum is σ = 276554496. Its totient is φ = 43211520.

The previous prime is 133955893. The next prime is 133955951. The reversal of 133955898 is 898559331.

It is a self number, because there is not a number n which added to its sum of digits gives 133955898.

It is not an unprimeable number, because it can be changed into a prime (133955891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 359911 + ... + 360282.

It is an arithmetic number, because the mean of its divisors is an integer number (17284656).

Almost surely, 2^133955898 is an apocalyptic number.

133955898 is an abundant number, since it is smaller than the sum of its proper divisors (142598598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133955898 is a wasteful number, since it uses less digits than its factorization.

133955898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720229.

The product of its digits is 1166400, while the sum is 51.

The square root of 133955898 is about 11573.9318297630. The cubic root of 133955898 is about 511.6668492091. Note that the first 3 decimals are identical.

The spelling of 133955898 in words is "one hundred thirty-three million, nine hundred fifty-five thousand, eight hundred ninety-eight".