199956793 has 2 divisors, whose sum is σ = 199956794. Its totient is φ = 199956792.

The previous prime is 199956787. The next prime is 199956797. The reversal of 199956793 is 397659991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199600384 + 356409 = 14128^2 + 597^2 .

It is a cyclic number.

It is not a de Polignac number, because 199956793 - 2⁵ = 199956761 is a prime.

It is not a weakly prime, because it can be changed into another prime (199956797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99978396 + 99978397.

It is an arithmetic number, because the mean of its divisors is an integer number (99978397).

Almost surely, 2^199956793 is an apocalyptic number.

It is an amenable number.

199956793 is a deficient number, since it is larger than the sum of its proper divisors (1).

199956793 is an equidigital number, since it uses as much as digits as its factorization.

199956793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4133430, while the sum is 58.

The square root of 199956793 is about 14140.6079430836. The cubic root of 199956793 is about 584.7614319315.

The spelling of 199956793 in words is "one hundred ninety-nine million, nine hundred fifty-six thousand, seven hundred ninety-three".