440988641 has 2 divisors, whose sum is σ = 440988642. Its totient is φ = 440988640.

The previous prime is 440988617. The next prime is 440988649. The reversal of 440988641 is 146889044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392198416 + 48790225 = 19804^2 + 6985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440988641 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 440988592 and 440988601.

It is not a weakly prime, because it can be changed into another prime (440988649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220494320 + 220494321.

It is an arithmetic number, because the mean of its divisors is an integer number (220494321).

Almost surely, 2^440988641 is an apocalyptic number.

It is an amenable number.

440988641 is a deficient number, since it is larger than the sum of its proper divisors (1).

440988641 is an equidigital number, since it uses as much as digits as its factorization.

440988641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 440988641 is about 20999.7295458775. The cubic root of 440988641 is about 761.1597258323.

The spelling of 440988641 in words is "four hundred forty million, nine hundred eighty-eight thousand, six hundred forty-one".