199976873 has 2 divisors, whose sum is σ = 199976874. Its totient is φ = 199976872.

The previous prime is 199976851. The next prime is 199976879. The reversal of 199976873 is 378679991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198612649 + 1364224 = 14093^2 + 1168^2 .

It is a cyclic number.

It is not a de Polignac number, because 199976873 - 2²⁶ = 132868009 is a prime.

It is not a weakly prime, because it can be changed into another prime (199976879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99988436 + 99988437.

It is an arithmetic number, because the mean of its divisors is an integer number (99988437).

Almost surely, 2^199976873 is an apocalyptic number.

It is an amenable number.

199976873 is a deficient number, since it is larger than the sum of its proper divisors (1).

199976873 is an equidigital number, since it uses as much as digits as its factorization.

199976873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 59.

The square root of 199976873 is about 14141.3179371655. The cubic root of 199976873 is about 584.7810055209.

The spelling of 199976873 in words is "one hundred ninety-nine million, nine hundred seventy-six thousand, eight hundred seventy-three".