134378889 has 4 divisors (see below), whose sum is σ = 179171856. Its totient is φ = 89585924.

The previous prime is 134378879. The next prime is 134378891. The reversal of 134378889 is 988873431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134378889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134378879) 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, 22396479 + ... + 22396484.

It is an arithmetic number, because the mean of its divisors is an integer number (44792964).

Almost surely, 2^134378889 is an apocalyptic number.

It is an amenable number.

134378889 is a deficient number, since it is larger than the sum of its proper divisors (44792967).

134378889 is an equidigital number, since it uses as much as digits as its factorization.

134378889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44792966.

The product of its digits is 1161216, while the sum is 51.

The square root of 134378889 is about 11592.1908628180. The cubic root of 134378889 is about 512.2048448419.

The spelling of 134378889 in words is "one hundred thirty-four million, three hundred seventy-eight thousand, eight hundred eighty-nine".