134421389 has 8 divisors (see below), whose sum is σ = 136513152. Its totient is φ = 132335280.

The previous prime is 134421383. The next prime is 134421439. The reversal of 134421389 is 983124431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134421389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134421383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91787 + ... + 93239.

It is an arithmetic number, because the mean of its divisors is an integer number (17064144).

Almost surely, 2^134421389 is an apocalyptic number.

It is an amenable number.

134421389 is a deficient number, since it is larger than the sum of its proper divisors (2091763).

134421389 is a wasteful number, since it uses less digits than its factorization.

134421389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827.

The product of its digits is 20736, while the sum is 35.

The square root of 134421389 is about 11594.0238485178. The cubic root of 134421389 is about 512.2588374780.

The spelling of 134421389 in words is "one hundred thirty-four million, four hundred twenty-one thousand, three hundred eighty-nine".