135341639 has 4 divisors (see below), whose sum is σ = 135371280. Its totient is φ = 135312000.

The previous prime is 135341603. The next prime is 135341653. The reversal of 135341639 is 936143531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936143531 = 10859 ⋅86209.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135341639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135341599 and 135341608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135341669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6362 + ... + 17639.

It is an arithmetic number, because the mean of its divisors is an integer number (33842820).

Almost surely, 2^135341639 is an apocalyptic number.

135341639 is a deficient number, since it is larger than the sum of its proper divisors (29641).

135341639 is an equidigital number, since it uses as much as digits as its factorization.

135341639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29640.

The product of its digits is 29160, while the sum is 35.

The square root of 135341639 is about 11633.6425508093. The cubic root of 135341639 is about 513.4251561253.

The spelling of 135341639 in words is "one hundred thirty-five million, three hundred forty-one thousand, six hundred thirty-nine".