4398981 has 16 divisors (see below), whose sum is σ = 6177600. Its totient is φ = 2780288.

The previous prime is 4398959. The next prime is 4398991. The reversal of 4398981 is 1898934.

It is not a de Polignac number, because 4398981 - 2⁵ = 4398949 is a prime.

It is a super-2 number, since 2×4398981² = 38702067676722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4398941) 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 15 ways as a sum of consecutive naturals, for example, 4705 + ... + 5561.

It is an arithmetic number, because the mean of its divisors is an integer number (386100).

Almost surely, 2^4398981 is an apocalyptic number.

It is an amenable number.

4398981 is a deficient number, since it is larger than the sum of its proper divisors (1778619).

4398981 is a wasteful number, since it uses less digits than its factorization.

4398981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948.

The product of its digits is 62208, while the sum is 42.

The square root of 4398981 is about 2097.3747876810. The cubic root of 4398981 is about 163.8516033196.

The spelling of 4398981 in words is "four million, three hundred ninety-eight thousand, nine hundred eighty-one".