133678339 has 4 divisors (see below), whose sum is σ = 133703440. Its totient is φ = 133653240.

The previous prime is 133678309. The next prime is 133678343. The reversal of 133678339 is 933876331.

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 133678339 - 2²¹ = 131581187 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133678295 and 133678304.

It is not an unprimeable number, because it can be changed into a prime (133678309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1047 + ... + 16384.

It is an arithmetic number, because the mean of its divisors is an integer number (33425860).

Almost surely, 2^133678339 is an apocalyptic number.

133678339 is a deficient number, since it is larger than the sum of its proper divisors (25101).

133678339 is an equidigital number, since it uses as much as digits as its factorization.

133678339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25100.

The product of its digits is 244944, while the sum is 43.

The square root of 133678339 is about 11561.9349159213. The cubic root of 133678339 is about 511.3132105814.

The spelling of 133678339 in words is "one hundred thirty-three million, six hundred seventy-eight thousand, three hundred thirty-nine".