9978583 has 2 divisors, whose sum is σ = 9978584. Its totient is φ = 9978582.

The previous prime is 9978557. The next prime is 9978587. The reversal of 9978583 is 3858799.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9978583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9978587) 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, 4989291 + 4989292.

It is an arithmetic number, because the mean of its divisors is an integer number (4989292).

Almost surely, 2^9978583 is an apocalyptic number.

9978583 is a deficient number, since it is larger than the sum of its proper divisors (1).

9978583 is an equidigital number, since it uses as much as digits as its factorization.

9978583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 9978583 is about 3158.8895200687. The cubic root of 9978583 is about 215.2895539784.

The spelling of 9978583 in words is "nine million, nine hundred seventy-eight thousand, five hundred eighty-three".