440233121 has 2 divisors, whose sum is σ = 440233122. Its totient is φ = 440233120.

The previous prime is 440233117. The next prime is 440233147. The reversal of 440233121 is 121332044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419430400 + 20802721 = 20480^2 + 4561^2 .

It is a cyclic number.

It is not a de Polignac number, because 440233121 - 2² = 440233117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440233093 and 440233102.

It is not a weakly prime, because it can be changed into another prime (440233111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220116560 + 220116561.

It is an arithmetic number, because the mean of its divisors is an integer number (220116561).

Almost surely, 2^440233121 is an apocalyptic number.

It is an amenable number.

440233121 is a deficient number, since it is larger than the sum of its proper divisors (1).

440233121 is an equidigital number, since it uses as much as digits as its factorization.

440233121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 440233121 is about 20981.7330313776. The cubic root of 440233121 is about 760.7247939032.

Adding to 440233121 its reverse (121332044), we get a palindrome (561565165).

The spelling of 440233121 in words is "four hundred forty million, two hundred thirty-three thousand, one hundred twenty-one".