999958873 has 2 divisors, whose sum is σ = 999958874. Its totient is φ = 999958872.

The previous prime is 999958829. The next prime is 999958901. The reversal of 999958873 is 378859999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797949504 + 202009369 = 28248^2 + 14213^2 .

It is a cyclic number.

It is not a de Polignac number, because 999958873 - 2⁹ = 999958361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999958799 and 999958808.

It is not a weakly prime, because it can be changed into another prime (999950873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499979436 + 499979437.

It is an arithmetic number, because the mean of its divisors is an integer number (499979437).

Almost surely, 2^999958873 is an apocalyptic number.

It is an amenable number.

999958873 is a deficient number, since it is larger than the sum of its proper divisors (1).

999958873 is an equidigital number, since it uses as much as digits as its factorization.

999958873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 44089920, while the sum is 67.

The square root of 999958873 is about 31622.1263200310. The cubic root of 999958873 is about 999.9862908121.

The spelling of 999958873 in words is "nine hundred ninety-nine million, nine hundred fifty-eight thousand, eight hundred seventy-three".