133982409 has 8 divisors (see below), whose sum is σ = 194883552. Its totient is φ = 81201440.

The previous prime is 133982399. The next prime is 133982411. The reversal of 133982409 is 904289331.

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

It is a cyclic number.

It is not a de Polignac number, because 133982409 - 2⁴ = 133982393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133982449) 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, 2030004 + ... + 2030069.

It is an arithmetic number, because the mean of its divisors is an integer number (24360444).

Almost surely, 2^133982409 is an apocalyptic number.

It is an amenable number.

133982409 is a deficient number, since it is larger than the sum of its proper divisors (60901143).

133982409 is a wasteful number, since it uses less digits than its factorization.

133982409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4060087.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 133982409 is about 11575.0770623785. The cubic root of 133982409 is about 511.7006013750.

The spelling of 133982409 in words is "one hundred thirty-three million, nine hundred eighty-two thousand, four hundred nine".