208870433 has 2 divisors, whose sum is σ = 208870434. Its totient is φ = 208870432.

The previous prime is 208870411. The next prime is 208870457. The reversal of 208870433 is 334078802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147671104 + 61199329 = 12152^2 + 7823^2 .

It is a cyclic number.

It is not a de Polignac number, because 208870433 - 2⁶ = 208870369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 208870393 and 208870402.

It is not a weakly prime, because it can be changed into another prime (208870133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104435216 + 104435217.

It is an arithmetic number, because the mean of its divisors is an integer number (104435217).

Almost surely, 2^208870433 is an apocalyptic number.

It is an amenable number.

208870433 is a deficient number, since it is larger than the sum of its proper divisors (1).

208870433 is an equidigital number, since it uses as much as digits as its factorization.

208870433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 208870433 is about 14452.3504316772. The cubic root of 208870433 is about 593.3245552363.

The spelling of 208870433 in words is "two hundred eight million, eight hundred seventy thousand, four hundred thirty-three".