840803263 has 2 divisors, whose sum is σ = 840803264. Its totient is φ = 840803262.

The previous prime is 840803191. The next prime is 840803267. The reversal of 840803263 is 362308048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 840803263 - 2⁹ = 840802751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (840803267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420401631 + 420401632.

It is an arithmetic number, because the mean of its divisors is an integer number (420401632).

Almost surely, 2^840803263 is an apocalyptic number.

840803263 is a deficient number, since it is larger than the sum of its proper divisors (1).

840803263 is an equidigital number, since it uses as much as digits as its factorization.

840803263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 840803263 is about 28996.6077843599. The cubic root of 840803263 is about 943.8394581048.

The spelling of 840803263 in words is "eight hundred forty million, eight hundred three thousand, two hundred sixty-three".