8919864 has 24 divisors (see below), whose sum is σ = 24158160. Its totient is φ = 2973264.

The previous prime is 8919857. The next prime is 8919871. The reversal of 8919864 is 4689198.

It is an interprime number because it is at equal distance from previous prime (8919857) and next prime (8919871).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×8919864³ (a number of 22 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61872 + ... + 62015.

It is an arithmetic number, because the mean of its divisors is an integer number (1006590).

Almost surely, 2^8919864 is an apocalyptic number.

It is an amenable number.

8919864 is an abundant number, since it is smaller than the sum of its proper divisors (15238296).

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

8919864 is a wasteful number, since it uses less digits than its factorization.

8919864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123899 (or 123892 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 8919864 is about 2986.6141364428. The cubic root of 8919864 is about 207.3891719575.

The spelling of 8919864 in words is "eight million, nine hundred nineteen thousand, eight hundred sixty-four".