440442481 has 2 divisors, whose sum is σ = 440442482. Its totient is φ = 440442480.

The previous prime is 440442469. The next prime is 440442529. The reversal of 440442481 is 184244044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405821025 + 34621456 = 20145^2 + 5884^2 .

It is a cyclic number.

It is not a de Polignac number, because 440442481 - 2⁵ = 440442449 is a prime.

It is a super-2 number, since 2×440442481² = 387979158138870722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (440442461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220221240 + 220221241.

It is an arithmetic number, because the mean of its divisors is an integer number (220221241).

Almost surely, 2^440442481 is an apocalyptic number.

It is an amenable number.

440442481 is a deficient number, since it is larger than the sum of its proper divisors (1).

440442481 is an equidigital number, since it uses as much as digits as its factorization.

440442481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16384, while the sum is 31.

The square root of 440442481 is about 20986.7215400596. The cubic root of 440442481 is about 760.8453664627.

The spelling of 440442481 in words is "four hundred forty million, four hundred forty-two thousand, four hundred eighty-one".