4408681 has 2 divisors, whose sum is σ = 4408682. Its totient is φ = 4408680.

The previous prime is 4408643. The next prime is 4408687. The reversal of 4408681 is 1868044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2277081 + 2131600 = 1509^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 4408681 - 2¹⁵ = 4375913 is a prime.

It is a super-2 number, since 2×4408681² = 38872936319522, which contains 22 as substring.

It is a Chen prime.

4408681 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (4408687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2204340 + 2204341.

It is an arithmetic number, because the mean of its divisors is an integer number (2204341).

Almost surely, 2^4408681 is an apocalyptic number.

It is an amenable number.

4408681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4408681 is an equidigital number, since it uses as much as digits as its factorization.

4408681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 4408681 is about 2099.6859288951. The cubic root of 4408681 is about 163.9719489005.

The spelling of 4408681 in words is "four million, four hundred eight thousand, six hundred eighty-one".