4389881 has 2 divisors, whose sum is σ = 4389882. Its totient is φ = 4389880.

The previous prime is 4389871. The next prime is 4389883. The reversal of 4389881 is 1889834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3297856 + 1092025 = 1816^2 + 1045^2 .

It is a cyclic number.

It is not a de Polignac number, because 4389881 - 2¹⁸ = 4127737 is a prime.

It is a super-2 number, since 2×4389881² = 38542110388322, which contains 22 as substring.

Together with 4389883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4389883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2194940 + 2194941.

It is an arithmetic number, because the mean of its divisors is an integer number (2194941).

Almost surely, 2^4389881 is an apocalyptic number.

It is an amenable number.

4389881 is a deficient number, since it is larger than the sum of its proper divisors (1).

4389881 is an equidigital number, since it uses as much as digits as its factorization.

4389881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 41.

The square root of 4389881 is about 2095.2042859826. The cubic root of 4389881 is about 163.7385408526.

The spelling of 4389881 in words is "four million, three hundred eighty-nine thousand, eight hundred eighty-one".