133347889 has 8 divisors (see below), whose sum is σ = 138998528. Its totient is φ = 127805040.

The previous prime is 133347853. The next prime is 133347923. The reversal of 133347889 is 988743331.

It is a happy number.

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 133347889 - 2⁷ = 133347761 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (133347839) 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, 24417 + ... + 29374.

It is an arithmetic number, because the mean of its divisors is an integer number (17374816).

Almost surely, 2^133347889 is an apocalyptic number.

It is an amenable number.

133347889 is a deficient number, since it is larger than the sum of its proper divisors (5650639).

133347889 is an equidigital number, since it uses as much as digits as its factorization.

133347889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53895.

The product of its digits is 435456, while the sum is 46.

The square root of 133347889 is about 11547.6356454471. The cubic root of 133347889 is about 510.8915444937.

The spelling of 133347889 in words is "one hundred thirty-three million, three hundred forty-seven thousand, eight hundred eighty-nine".