134184989 has 2 divisors, whose sum is σ = 134184990. Its totient is φ = 134184988.

The previous prime is 134184979. The next prime is 134184991. The reversal of 134184989 is 989481431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71537764 + 62647225 = 8458^2 + 7915^2 .

It is an emirp because it is prime and its reverse (989481431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134184989 is a prime.

It is a super-2 number, since 2×134184989² = 36011222545860242, which contains 22 as substring.

Together with 134184991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134184979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67092494 + 67092495.

It is an arithmetic number, because the mean of its divisors is an integer number (67092495).

Almost surely, 2^134184989 is an apocalyptic number.

It is an amenable number.

134184989 is a deficient number, since it is larger than the sum of its proper divisors (1).

134184989 is an equidigital number, since it uses as much as digits as its factorization.

134184989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 47.

The square root of 134184989 is about 11583.8244548163. The cubic root of 134184989 is about 511.9583668234.

The spelling of 134184989 in words is "one hundred thirty-four million, one hundred eighty-four thousand, nine hundred eighty-nine".