440102213 has 2 divisors, whose sum is σ = 440102214. Its totient is φ = 440102212.

The previous prime is 440102209. The next prime is 440102227. The reversal of 440102213 is 312201044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426092164 + 14010049 = 20642^2 + 3743^2 .

It is a cyclic number.

It is not a de Polignac number, because 440102213 - 2² = 440102209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440102191 and 440102200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440102413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220051106 + 220051107.

It is an arithmetic number, because the mean of its divisors is an integer number (220051107).

Almost surely, 2^440102213 is an apocalyptic number.

It is an amenable number.

440102213 is a deficient number, since it is larger than the sum of its proper divisors (1).

440102213 is an equidigital number, since it uses as much as digits as its factorization.

440102213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 440102213 is about 20978.6132287146. The cubic root of 440102213 is about 760.6493832257.

Adding to 440102213 its reverse (312201044), we get a palindrome (752303257).

The spelling of 440102213 in words is "four hundred forty million, one hundred two thousand, two hundred thirteen".