135467639 has 2 divisors, whose sum is σ = 135467640. Its totient is φ = 135467638.

The previous prime is 135467623. The next prime is 135467659. The reversal of 135467639 is 936764531.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (936764531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135467639 - 2⁴ = 135467623 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135467639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135467609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67733819 + 67733820.

It is an arithmetic number, because the mean of its divisors is an integer number (67733820).

Almost surely, 2^135467639 is an apocalyptic number.

135467639 is a deficient number, since it is larger than the sum of its proper divisors (1).

135467639 is an equidigital number, since it uses as much as digits as its factorization.

135467639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 135467639 is about 11639.0566198468. The cubic root of 135467639 is about 513.5844357701.

The spelling of 135467639 in words is "one hundred thirty-five million, four hundred sixty-seven thousand, six hundred thirty-nine".