873913993 has 2 divisors, whose sum is σ = 873913994. Its totient is φ = 873913992.

The previous prime is 873913991. The next prime is 873914011. The reversal of 873913993 is 399319378.

873913993 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., 756690064 + 117223929 = 27508^2 + 10827^2 .

It is a cyclic number.

It is not a de Polignac number, because 873913993 - 2¹ = 873913991 is a prime.

It is a super-2 number, since 2×873913993² = 1527451334322408098, which contains 22 as substring.

Together with 873913991, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 873913993.

It is not a weakly prime, because it can be changed into another prime (873913991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436956996 + 436956997.

It is an arithmetic number, because the mean of its divisors is an integer number (436956997).

Almost surely, 2^873913993 is an apocalyptic number.

It is an amenable number.

873913993 is a deficient number, since it is larger than the sum of its proper divisors (1).

873913993 is an equidigital number, since it uses as much as digits as its factorization.

873913993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 52.

The square root of 873913993 is about 29562.0363473155. The cubic root of 873913993 is about 956.0697215334.

The spelling of 873913993 in words is "eight hundred seventy-three million, nine hundred thirteen thousand, nine hundred ninety-three".