133984375 has 36 divisors (see below), whose sum is σ = 195312400. Its totient is φ = 91875000.

The previous prime is 133984373. The next prime is 133984391. The reversal of 133984375 is 573489331.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 133984375 - 2¹ = 133984373 is a prime.

Its product of digits (272160) is a multiple of the sum of its prime divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133984373) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19140622 + ... + 19140628.

Almost surely, 2^133984375 is an apocalyptic number.

133984375 is a deficient number, since it is larger than the sum of its proper divisors (61328025).

133984375 is an frugal number, since it uses more digits than its factorization.

133984375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 12 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 133984375 is about 11575.1619859076. The cubic root of 133984375 is about 511.7031041873.

The spelling of 133984375 in words is "one hundred thirty-three million, nine hundred eighty-four thousand, three hundred seventy-five".