134441639 has 2 divisors, whose sum is σ = 134441640. Its totient is φ = 134441638.

The previous prime is 134441633. The next prime is 134441641. The reversal of 134441639 is 936144431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134441639 - 2⁴ = 134441623 is a prime.

Together with 134441641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 134441599 and 134441608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134441633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67220819 + 67220820.

It is an arithmetic number, because the mean of its divisors is an integer number (67220820).

Almost surely, 2^134441639 is an apocalyptic number.

134441639 is a deficient number, since it is larger than the sum of its proper divisors (1).

134441639 is an equidigital number, since it uses as much as digits as its factorization.

134441639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 134441639 is about 11594.8971103671. The cubic root of 134441639 is about 512.2845593781.

The spelling of 134441639 in words is "one hundred thirty-four million, four hundred forty-one thousand, six hundred thirty-nine".