8440219 has 8 divisors (see below), whose sum is σ = 8714160. Its totient is φ = 8169600.

The previous prime is 8440207. The next prime is 8440231. The reversal of 8440219 is 9120448.

It is an interprime number because it is at equal distance from previous prime (8440207) and next prime (8440231).

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

It is a cyclic number.

It is not a de Polignac number, because 8440219 - 2⁹ = 8439707 is a prime.

It is a super-2 number, since 2×8440219² = 142474593535922, which contains 22 as substring.

It is a Duffinian number.

8440219 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8440249) 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, 4959 + ... + 6439.

It is an arithmetic number, because the mean of its divisors is an integer number (1089270).

Almost surely, 2^8440219 is an apocalyptic number.

8440219 is a deficient number, since it is larger than the sum of its proper divisors (273941).

8440219 is a wasteful number, since it uses less digits than its factorization.

8440219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 8440219 is about 2905.2055004767. The cubic root of 8440219 is about 203.6031870486.

The spelling of 8440219 in words is "eight million, four hundred forty thousand, two hundred nineteen".