999948773 has 2 divisors, whose sum is σ = 999948774. Its totient is φ = 999948772.

The previous prime is 999948769. The next prime is 999948787. The reversal of 999948773 is 377849999.

999948773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 934952929 + 64995844 = 30577^2 + 8062^2 .

It is a cyclic number.

It is not a de Polignac number, because 999948773 - 2² = 999948769 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999948793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499974386 + 499974387.

It is an arithmetic number, because the mean of its divisors is an integer number (499974387).

Almost surely, 2^999948773 is an apocalyptic number.

It is an amenable number.

999948773 is a deficient number, since it is larger than the sum of its proper divisors (1).

999948773 is an equidigital number, since it uses as much as digits as its factorization.

999948773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30862944, while the sum is 65.

The square root of 999948773 is about 31621.9666213220. The cubic root of 999948773 is about 999.9829240417.

The spelling of 999948773 in words is "nine hundred ninety-nine million, nine hundred forty-eight thousand, seven hundred seventy-three".