135873447 has 8 divisors (see below), whose sum is σ = 181484160. Its totient is φ = 90422520.

The previous prime is 135873431. The next prime is 135873499. The reversal of 135873447 is 744378531.

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

It is not a de Polignac number, because 135873447 - 2⁴ = 135873431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135873399 and 135873408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135873247) 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, 37947 + ... + 41372.

It is an arithmetic number, because the mean of its divisors is an integer number (22685520).

Almost surely, 2^135873447 is an apocalyptic number.

135873447 is a deficient number, since it is larger than the sum of its proper divisors (45610713).

135873447 is an equidigital number, since it uses as much as digits as its factorization.

135873447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79893.

The product of its digits is 282240, while the sum is 42.

The square root of 135873447 is about 11656.4766117382. The cubic root of 135873447 is about 514.0967571588.

The spelling of 135873447 in words is "one hundred thirty-five million, eight hundred seventy-three thousand, four hundred forty-seven".