263798947 has 2 divisors, whose sum is σ = 263798948. Its totient is φ = 263798946.

The previous prime is 263798917. The next prime is 263798981. The reversal of 263798947 is 749897362.

263798947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263798947 is a prime.

It is not a weakly prime, because it can be changed into another prime (263798917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131899473 + 131899474.

It is an arithmetic number, because the mean of its divisors is an integer number (131899474).

Almost surely, 2^263798947 is an apocalyptic number.

263798947 is a deficient number, since it is larger than the sum of its proper divisors (1).

263798947 is an equidigital number, since it uses as much as digits as its factorization.

263798947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 55.

The square root of 263798947 is about 16241.8886524936. Note that the first 3 decimals coincide. The cubic root of 263798947 is about 641.3439750456.

It can be divided in two parts, 26 and 3798947, that added together give a palindrome (3798973).

The spelling of 263798947 in words is "two hundred sixty-three million, seven hundred ninety-eight thousand, nine hundred forty-seven".