8919138 has 8 divisors (see below), whose sum is σ = 17838288. Its totient is φ = 2973044.

The previous prime is 8919133. The next prime is 8919139. The reversal of 8919138 is 8319198.

It is a happy number.

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

8919138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 8919096 and 8919105.

It is not an unprimeable number, because it can be changed into a prime (8919133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743256 + ... + 743267.

It is an arithmetic number, because the mean of its divisors is an integer number (2229786).

Almost surely, 2^8919138 is an apocalyptic number.

8919138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8919138 is a wasteful number, since it uses less digits than its factorization.

8919138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486528.

The product of its digits is 15552, while the sum is 39.

The square root of 8919138 is about 2986.4925916533. The cubic root of 8919138 is about 207.3835452415.

The spelling of 8919138 in words is "eight million, nine hundred nineteen thousand, one hundred thirty-eight".