200926991 has 2 divisors, whose sum is σ = 200926992. Its totient is φ = 200926990.

The previous prime is 200926949. The next prime is 200926997. The reversal of 200926991 is 199629002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200926991 - 2¹⁸ = 200664847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200926997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100463495 + 100463496.

It is an arithmetic number, because the mean of its divisors is an integer number (100463496).

Almost surely, 2^200926991 is an apocalyptic number.

200926991 is a deficient number, since it is larger than the sum of its proper divisors (1).

200926991 is an equidigital number, since it uses as much as digits as its factorization.

200926991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 200926991 is about 14174.8718159989. The cubic root of 200926991 is about 585.7056680214.

The spelling of 200926991 in words is "two hundred million, nine hundred twenty-six thousand, nine hundred ninety-one".