440212193 has 2 divisors, whose sum is σ = 440212194. Its totient is φ = 440212192.

The previous prime is 440212189. The next prime is 440212217. The reversal of 440212193 is 391212044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 365268544 + 74943649 = 19112^2 + 8657^2 .

It is a cyclic number.

It is not a de Polignac number, because 440212193 - 2² = 440212189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (440112193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220106096 + 220106097.

It is an arithmetic number, because the mean of its divisors is an integer number (220106097).

Almost surely, 2^440212193 is an apocalyptic number.

It is an amenable number.

440212193 is a deficient number, since it is larger than the sum of its proper divisors (1).

440212193 is an equidigital number, since it uses as much as digits as its factorization.

440212193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 440212193 is about 20981.2343059220. The cubic root of 440212193 is about 760.7127391531.

The spelling of 440212193 in words is "four hundred forty million, two hundred twelve thousand, one hundred ninety-three".