873799649 has 2 divisors, whose sum is σ = 873799650. Its totient is φ = 873799648.

The previous prime is 873799637. The next prime is 873799669. The reversal of 873799649 is 946997378.

873799649 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., 752953600 + 120846049 = 27440^2 + 10993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-873799649 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 873799591 and 873799600.

It is not a weakly prime, because it can be changed into another prime (873799669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436899824 + 436899825.

It is an arithmetic number, because the mean of its divisors is an integer number (436899825).

Almost surely, 2^873799649 is an apocalyptic number.

It is an amenable number.

873799649 is a deficient number, since it is larger than the sum of its proper divisors (1).

873799649 is an equidigital number, since it uses as much as digits as its factorization.

873799649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20575296, while the sum is 62.

The square root of 873799649 is about 29560.1023171436. The cubic root of 873799649 is about 956.0280219286.

The spelling of 873799649 in words is "eight hundred seventy-three million, seven hundred ninety-nine thousand, six hundred forty-nine".