219085139 has 8 divisors (see below), whose sum is σ = 269643360. Its totient is φ = 173342016.

The previous prime is 219085133. The next prime is 219085151. The reversal of 219085139 is 931580912.

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 219085139 - 2²⁰ = 218036563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (219085133) 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, 1203674 + ... + 1203855.

It is an arithmetic number, because the mean of its divisors is an integer number (33705420).

Almost surely, 2^219085139 is an apocalyptic number.

219085139 is a deficient number, since it is larger than the sum of its proper divisors (50558221).

219085139 is a wasteful number, since it uses less digits than its factorization.

219085139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407549.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 219085139 is about 14801.5248876594. The cubic root of 219085139 is about 602.8431167180.

The spelling of 219085139 in words is "two hundred nineteen million, eighty-five thousand, one hundred thirty-nine".