9948779 has 2 divisors, whose sum is σ = 9948780. Its totient is φ = 9948778.

The previous prime is 9948767. The next prime is 9948787. The reversal of 9948779 is 9778499.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9948779 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9948779.

It is not a weakly prime, because it can be changed into another prime (9948709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4974389 + 4974390.

It is an arithmetic number, because the mean of its divisors is an integer number (4974390).

Almost surely, 2^9948779 is an apocalyptic number.

9948779 is a deficient number, since it is larger than the sum of its proper divisors (1).

9948779 is an equidigital number, since it uses as much as digits as its factorization.

9948779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 53.

The square root of 9948779 is about 3154.1685116683. The cubic root of 9948779 is about 215.0749981729.

The spelling of 9948779 in words is "nine million, nine hundred forty-eight thousand, seven hundred seventy-nine".