219940843 has 6 divisors (see below), whose sum is σ = 227787404. Its totient is φ = 212355864.

The previous prime is 219940823. The next prime is 219940859. The reversal of 219940843 is 348049912.

It is not a de Polignac number, because 219940843 - 2¹⁷ = 219809771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 219940796 and 219940805.

It is not an unprimeable number, because it can be changed into a prime (219940823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129921 + ... + 131602.

Almost surely, 2^219940843 is an apocalyptic number.

219940843 is a deficient number, since it is larger than the sum of its proper divisors (7846561).

219940843 is an equidigital number, since it uses as much as digits as its factorization.

219940843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261581 (or 261552 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 219940843 is about 14830.4026580535. The cubic root of 219940843 is about 603.6269597969.

The spelling of 219940843 in words is "two hundred nineteen million, nine hundred forty thousand, eight hundred forty-three".