208029919 has 2 divisors, whose sum is σ = 208029920. Its totient is φ = 208029918.

The previous prime is 208029893. The next prime is 208029961. The reversal of 208029919 is 919920802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 208029919 - 2⁹ = 208029407 is a prime.

It is a super-2 number, since 2×208029919² = 86552894398293122, which contains 22 as substring.

It is equal to p_11498764 and since 208029919 and 11498764 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208029719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104014959 + 104014960.

It is an arithmetic number, because the mean of its divisors is an integer number (104014960).

Almost surely, 2^208029919 is an apocalyptic number.

208029919 is a deficient number, since it is larger than the sum of its proper divisors (1).

208029919 is an equidigital number, since it uses as much as digits as its factorization.

208029919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 208029919 is about 14423.2423192568. The cubic root of 208029919 is about 592.5276209476.

The spelling of 208029919 in words is "two hundred eight million, twenty-nine thousand, nine hundred nineteen".