8921319 has 8 divisors (see below), whose sum is σ = 12976512. Its totient is φ = 5406840.

The previous prime is 8921287. The next prime is 8921321. The reversal of 8921319 is 9131298.

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

It is not a de Polignac number, because 8921319 - 2⁵ = 8921287 is a prime.

It is a super-2 number, since 2×8921319² = 159179865399522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 270343 = 8921319 / (8 + 9 + 2 + 1 + 3 + 1 + 9).

It is an Ulam number.

It is a d-powerful number, because it can be written as 8³ + 9³ + 2²³ + 1 + 3³ + 1 + 9⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 8921319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921359) 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, 135139 + ... + 135204.

It is an arithmetic number, because the mean of its divisors is an integer number (1622064).

Almost surely, 2^8921319 is an apocalyptic number.

8921319 is a deficient number, since it is larger than the sum of its proper divisors (4055193).

8921319 is a wasteful number, since it uses less digits than its factorization.

8921319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270357.

The product of its digits is 3888, while the sum is 33.

The square root of 8921319 is about 2986.8577133837. The cubic root of 8921319 is about 207.4004477213.

It can be divided in two parts, 892 and 1319, that added together give a triangular number (2211 = T₆₆).

The spelling of 8921319 in words is "eight million, nine hundred twenty-one thousand, three hundred nineteen".