440936681 has 2 divisors, whose sum is σ = 440936682. Its totient is φ = 440936680.

The previous prime is 440936623. The next prime is 440936707. The reversal of 440936681 is 186639044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 346555456 + 94381225 = 18616^2 + 9715^2 .

It is a cyclic number.

It is not a de Polignac number, because 440936681 - 2¹⁴ = 440920297 is a prime.

It is a super-2 number, since 2×440936681² = 388850313302591522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (440930681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220468340 + 220468341.

It is an arithmetic number, because the mean of its divisors is an integer number (220468341).

Almost surely, 2^440936681 is an apocalyptic number.

It is an amenable number.

440936681 is a deficient number, since it is larger than the sum of its proper divisors (1).

440936681 is an equidigital number, since it uses as much as digits as its factorization.

440936681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 440936681 is about 20998.4923506427. The cubic root of 440936681 is about 761.1298298145.

The spelling of 440936681 in words is "four hundred forty million, nine hundred thirty-six thousand, six hundred eighty-one".