200890423 has 2 divisors, whose sum is σ = 200890424. Its totient is φ = 200890422.

The previous prime is 200890399. The next prime is 200890433. The reversal of 200890423 is 324098002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200890423 - 2⁹ = 200889911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200890391 and 200890400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200890433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100445211 + 100445212.

It is an arithmetic number, because the mean of its divisors is an integer number (100445212).

Almost surely, 2^200890423 is an apocalyptic number.

200890423 is a deficient number, since it is larger than the sum of its proper divisors (1).

200890423 is an equidigital number, since it uses as much as digits as its factorization.

200890423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 200890423 is about 14173.5818690972. The cubic root of 200890423 is about 585.6701337473.

The spelling of 200890423 in words is "two hundred million, eight hundred ninety thousand, four hundred twenty-three".