7440219 has 12 divisors (see below), whose sum is σ = 11037936. Its totient is φ = 4825872.

The previous prime is 7440187. The next prime is 7440221. The reversal of 7440219 is 9120447.

It is a happy number.

7440219 is a `hidden beast` number, since 7 + 440 + 219 = 666.

It is not a de Polignac number, because 7440219 - 2⁵ = 7440187 is a prime.

It is a super-2 number, since 2×7440219² = 110713717535922, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

7440219 is a lucky number.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 7440192 and 7440201.

It is not an unprimeable number, because it can be changed into a prime (7440289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10839 + ... + 11504.

It is an arithmetic number, because the mean of its divisors is an integer number (919828).

Almost surely, 2^7440219 is an apocalyptic number.

7440219 is a deficient number, since it is larger than the sum of its proper divisors (3597717).

7440219 is a wasteful number, since it uses less digits than its factorization.

7440219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22386 (or 22383 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 7440219 is about 2727.6764837495. The cubic root of 7440219 is about 195.2219169800.

The spelling of 7440219 in words is "seven million, four hundred forty thousand, two hundred nineteen".