133438898 has 8 divisors (see below), whose sum is σ = 200293680. Its totient is φ = 66674340.

The previous prime is 133438873. The next prime is 133438913. The reversal of 133438898 is 898834331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18728 + ... + 24851.

It is an arithmetic number, because the mean of its divisors is an integer number (25036710).

Almost surely, 2^133438898 is an apocalyptic number.

133438898 is a deficient number, since it is larger than the sum of its proper divisors (66854782).

133438898 is a wasteful number, since it uses less digits than its factorization.

133438898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45112.

The product of its digits is 497664, while the sum is 47.

The square root of 133438898 is about 11551.5755635324. The cubic root of 133438898 is about 511.0077446957.

The spelling of 133438898 in words is "one hundred thirty-three million, four hundred thirty-eight thousand, eight hundred ninety-eight".