440012213 has 2 divisors, whose sum is σ = 440012214. Its totient is φ = 440012212.

The previous prime is 440012197. The next prime is 440012269. The reversal of 440012213 is 312210044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 362255089 + 77757124 = 19033^2 + 8818^2 .

It is a cyclic number.

It is not a de Polignac number, because 440012213 - 2⁴ = 440012197 is a prime.

It is a super-2 number, since 2×440012213² = 387221495178314738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 440012191 and 440012200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440012813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220006106 + 220006107.

It is an arithmetic number, because the mean of its divisors is an integer number (220006107).

Almost surely, 2^440012213 is an apocalyptic number.

It is an amenable number.

440012213 is a deficient number, since it is larger than the sum of its proper divisors (1).

440012213 is an equidigital number, since it uses as much as digits as its factorization.

440012213 is an odious number, because the sum of its binary digits is odd.

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

The square root of 440012213 is about 20976.4680773480. The cubic root of 440012213 is about 760.5975292778.

Adding to 440012213 its reverse (312210044), we get a palindrome (752222257).

The spelling of 440012213 in words is "four hundred forty million, twelve thousand, two hundred thirteen".