209796463 has 2 divisors, whose sum is σ = 209796464. Its totient is φ = 209796462.

The previous prime is 209796449. The next prime is 209796487. The reversal of 209796463 is 364697902.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209796463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (209796443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104898231 + 104898232.

It is an arithmetic number, because the mean of its divisors is an integer number (104898232).

Almost surely, 2^209796463 is an apocalyptic number.

209796463 is a deficient number, since it is larger than the sum of its proper divisors (1).

209796463 is an equidigital number, since it uses as much as digits as its factorization.

209796463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 209796463 is about 14484.3523500362. The cubic root of 209796463 is about 594.2001001793.

The spelling of 209796463 in words is "two hundred nine million, seven hundred ninety-six thousand, four hundred sixty-three".