135449839 has 8 divisors (see below), whose sum is σ = 155377440. Its totient is φ = 115666656.

The previous prime is 135449771. The next prime is 135449843. The reversal of 135449839 is 938944531.

It is a happy number.

135449839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135449839 - 2¹⁵ = 135417071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135449849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34084 + ... + 37849.

It is an arithmetic number, because the mean of its divisors is an integer number (19422180).

Almost surely, 2^135449839 is an apocalyptic number.

135449839 is a deficient number, since it is larger than the sum of its proper divisors (19927601).

135449839 is an equidigital number, since it uses as much as digits as its factorization.

135449839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72209.

The product of its digits is 466560, while the sum is 46.

The square root of 135449839 is about 11638.2919279420. The cubic root of 135449839 is about 513.5619403524.

The spelling of 135449839 in words is "one hundred thirty-five million, four hundred forty-nine thousand, eight hundred thirty-nine".