133998835 has 4 divisors (see below), whose sum is σ = 160798608. Its totient is φ = 107199064.

The previous prime is 133998817. The next prime is 133998847. The reversal of 133998835 is 538899331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133998835 - 2⁵ = 133998803 is a prime.

It is a Duffinian number.

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, 13399879 + ... + 13399888.

It is an arithmetic number, because the mean of its divisors is an integer number (40199652).

Almost surely, 2^133998835 is an apocalyptic number.

133998835 is a deficient number, since it is larger than the sum of its proper divisors (26799773).

133998835 is an equidigital number, since it uses as much as digits as its factorization.

133998835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26799772.

The product of its digits is 699840, while the sum is 49.

The square root of 133998835 is about 11575.7865823451. The cubic root of 133998835 is about 511.7215117086.

The spelling of 133998835 in words is "one hundred thirty-three million, nine hundred ninety-eight thousand, eight hundred thirty-five".