440242219 has 2 divisors, whose sum is σ = 440242220. Its totient is φ = 440242218.

The previous prime is 440242157. The next prime is 440242223. The reversal of 440242219 is 912242044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440242219 - 2²¹ = 438145067 is a prime.

It is a super-2 number, since 2×440242219² = 387626422780087922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (440242249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220121109 + 220121110.

It is an arithmetic number, because the mean of its divisors is an integer number (220121110).

Almost surely, 2^440242219 is an apocalyptic number.

440242219 is a deficient number, since it is larger than the sum of its proper divisors (1).

440242219 is an equidigital number, since it uses as much as digits as its factorization.

440242219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 440242219 is about 20981.9498378964. The cubic root of 440242219 is about 760.7300343286.

The spelling of 440242219 in words is "four hundred forty million, two hundred forty-two thousand, two hundred nineteen".