208554943 has 2 divisors, whose sum is σ = 208554944. Its totient is φ = 208554942.

The previous prime is 208554889. The next prime is 208554967. The reversal of 208554943 is 349455802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208554943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 208554896 and 208554905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208554743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104277471 + 104277472.

It is an arithmetic number, because the mean of its divisors is an integer number (104277472).

Almost surely, 2^208554943 is an apocalyptic number.

208554943 is a deficient number, since it is larger than the sum of its proper divisors (1).

208554943 is an equidigital number, since it uses as much as digits as its factorization.

208554943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 208554943 is about 14441.4314733686. The cubic root of 208554943 is about 593.0256741119.

The spelling of 208554943 in words is "two hundred eight million, five hundred fifty-four thousand, nine hundred forty-three".