8869819 has 4 divisors (see below), whose sum is σ = 10136944. Its totient is φ = 7602696.

The previous prime is 8869799. The next prime is 8869837. The reversal of 8869819 is 9189688.

It is a happy number.

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 8869819 - 2¹³ = 8861627 is a prime.

It is a super-2 number, since 2×8869819² = 157347378185522, which contains 22 as substring.

It is a Duffinian number.

8869819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8869859) 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, 633552 + ... + 633565.

It is an arithmetic number, because the mean of its divisors is an integer number (2534236).

Almost surely, 2^8869819 is an apocalyptic number.

8869819 is a deficient number, since it is larger than the sum of its proper divisors (1267125).

8869819 is a wasteful number, since it uses less digits than its factorization.

8869819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267124.

The product of its digits is 248832, while the sum is 49.

The square root of 8869819 is about 2978.2241352860. The cubic root of 8869819 is about 207.0005912218. Note that the first 3 decimals are identical.

The spelling of 8869819 in words is "eight million, eight hundred sixty-nine thousand, eight hundred nineteen".