4398681 has 24 divisors (see below), whose sum is σ = 7124544. Its totient is φ = 2402400.

The previous prime is 4398679. The next prime is 4398689. The reversal of 4398681 is 1868934.

It is not a de Polignac number, because 4398681 - 2¹ = 4398679 is a prime.

It is a super-2 number, since 2×4398681² = 38696789079522, which contains 22 as substring.

It is a Curzon number.

4398681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4398689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2731 + ... + 4031.

It is an arithmetic number, because the mean of its divisors is an integer number (296856).

Almost surely, 2^4398681 is an apocalyptic number.

It is an amenable number.

4398681 is a deficient number, since it is larger than the sum of its proper divisors (2725863).

4398681 is a wasteful number, since it uses less digits than its factorization.

4398681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341 (or 1334 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 4398681 is about 2097.3032684855. The cubic root of 4398681 is about 163.8478784722.

The spelling of 4398681 in words is "four million, three hundred ninety-eight thousand, six hundred eighty-one".