8538919 has 4 divisors (see below), whose sum is σ = 8814400. Its totient is φ = 8263440.

The previous prime is 8538889. The next prime is 8538931. The reversal of 8538919 is 9198358.

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 8538919 - 2¹⁹ = 8014631 is a prime.

It is a super-2 number, since 2×8538919² = 145826275377122, 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 (8538979) 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, 137694 + ... + 137755.

It is an arithmetic number, because the mean of its divisors is an integer number (2203600).

Almost surely, 2^8538919 is an apocalyptic number.

8538919 is a deficient number, since it is larger than the sum of its proper divisors (275481).

8538919 is a wasteful number, since it uses less digits than its factorization.

8538919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275480.

The product of its digits is 77760, while the sum is 43.

The square root of 8538919 is about 2922.1428780948. The cubic root of 8538919 is about 204.3937592160.

The spelling of 8538919 in words is "eight million, five hundred thirty-eight thousand, nine hundred nineteen".