208880891 has 2 divisors, whose sum is σ = 208880892. Its totient is φ = 208880890.

The previous prime is 208880857. The next prime is 208880911. The reversal of 208880891 is 198088802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 208880891 - 2¹⁴ = 208864507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (208880801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104440445 + 104440446.

It is an arithmetic number, because the mean of its divisors is an integer number (104440446).

Almost surely, 2^208880891 is an apocalyptic number.

208880891 is a deficient number, since it is larger than the sum of its proper divisors (1).

208880891 is an equidigital number, since it uses as much as digits as its factorization.

208880891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 44.

The square root of 208880891 is about 14452.7122368087. The cubic root of 208880891 is about 593.3344575229.

The spelling of 208880891 in words is "two hundred eight million, eight hundred eighty thousand, eight hundred ninety-one".