134228639 has 2 divisors, whose sum is σ = 134228640. Its totient is φ = 134228638.

The previous prime is 134228623. The next prime is 134228641. The reversal of 134228639 is 936822431.

It is a strong prime.

It is an emirp because it is prime and its reverse (936822431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134228639 - 2⁴ = 134228623 is a prime.

Together with 134228641, 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 (134228839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67114319 + 67114320.

It is an arithmetic number, because the mean of its divisors is an integer number (67114320).

Almost surely, 2^134228639 is an apocalyptic number.

134228639 is a deficient number, since it is larger than the sum of its proper divisors (1).

134228639 is an equidigital number, since it uses as much as digits as its factorization.

134228639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 134228639 is about 11585.7083943970. The cubic root of 134228639 is about 512.0138736780.

The spelling of 134228639 in words is "one hundred thirty-four million, two hundred twenty-eight thousand, six hundred thirty-nine".