939844663 has 2 divisors, whose sum is σ = 939844664. Its totient is φ = 939844662.

The previous prime is 939844649. The next prime is 939844669. The reversal of 939844663 is 366448939.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-939844663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 939844663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (939844669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469922331 + 469922332.

It is an arithmetic number, because the mean of its divisors is an integer number (469922332).

Almost surely, 2^939844663 is an apocalyptic number.

939844663 is a deficient number, since it is larger than the sum of its proper divisors (1).

939844663 is an equidigital number, since it uses as much as digits as its factorization.

939844663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 52.

The square root of 939844663 is about 30656.8860616991. The cubic root of 939844663 is about 979.5321461801.

The spelling of 939844663 in words is "nine hundred thirty-nine million, eight hundred forty-four thousand, six hundred sixty-three".