134659639 has 4 divisors (see below), whose sum is σ = 134927856. Its totient is φ = 134391424.

The previous prime is 134659627. The next prime is 134659643. The reversal of 134659639 is 936956431.

134659639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 134659639 - 2⁹ = 134659127 is a prime.

It is a super-2 number, since 2×134659639² = 36266436751220642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134659619) 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, 133354 + ... + 134359.

It is an arithmetic number, because the mean of its divisors is an integer number (33731964).

Almost surely, 2^134659639 is an apocalyptic number.

134659639 is a deficient number, since it is larger than the sum of its proper divisors (268217).

134659639 is an equidigital number, since it uses as much as digits as its factorization.

134659639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268216.

The product of its digits is 524880, while the sum is 46.

The square root of 134659639 is about 11604.2939897264. The cubic root of 134659639 is about 512.5613033153.

It can be divided in two parts, 13465 and 9639, that added together give a square (23104 = 152²).

The spelling of 134659639 in words is "one hundred thirty-four million, six hundred fifty-nine thousand, six hundred thirty-nine".