135001439 has 8 divisors (see below), whose sum is σ = 136458000. Its totient is φ = 133549696.

The previous prime is 135001423. The next prime is 135001453. The reversal of 135001439 is 934100531.

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

It is a cyclic number.

It is not a de Polignac number, because 135001439 - 2⁴ = 135001423 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 (135001469) 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, 89312 + ... + 90810.

It is an arithmetic number, because the mean of its divisors is an integer number (17057250).

Almost surely, 2^135001439 is an apocalyptic number.

135001439 is a deficient number, since it is larger than the sum of its proper divisors (1456561).

135001439 is a wasteful number, since it uses less digits than its factorization.

135001439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 135001439 is about 11619.0119631576. The cubic root of 135001439 is about 512.9946067042.

The spelling of 135001439 in words is "one hundred thirty-five million, one thousand, four hundred thirty-nine".