4381963 has 2 divisors, whose sum is σ = 4381964. Its totient is φ = 4381962.

The previous prime is 4381961. The next prime is 4381967. The reversal of 4381963 is 3691834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4381963 - 2¹ = 4381961 is a prime.

Together with 4381961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4381961) 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 as a sum of consecutive naturals, namely, 2190981 + 2190982.

It is an arithmetic number, because the mean of its divisors is an integer number (2190982).

Almost surely, 2^4381963 is an apocalyptic number.

4381963 is a deficient number, since it is larger than the sum of its proper divisors (1).

4381963 is an equidigital number, since it uses as much as digits as its factorization.

4381963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 34.

The square root of 4381963 is about 2093.3138799521. The cubic root of 4381963 is about 163.6400368891.

It can be divided in two parts, 438 and 1963, that added together give a 4-th power (2401 = 7⁴).

The spelling of 4381963 in words is "four million, three hundred eighty-one thousand, nine hundred sixty-three".