263270393 has 2 divisors, whose sum is σ = 263270394. Its totient is φ = 263270392.

The previous prime is 263270387. The next prime is 263270401. The reversal of 263270393 is 393072362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178409449 + 84860944 = 13357^2 + 9212^2 .

It is a cyclic number.

It is not a de Polignac number, because 263270393 - 2⁴ = 263270377 is a prime.

It is a super-2 number, since 2×263270393² = 138622599660748898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (263270303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131635196 + 131635197.

It is an arithmetic number, because the mean of its divisors is an integer number (131635197).

Almost surely, 2^263270393 is an apocalyptic number.

It is an amenable number.

263270393 is a deficient number, since it is larger than the sum of its proper divisors (1).

263270393 is an equidigital number, since it uses as much as digits as its factorization.

263270393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 35.

The square root of 263270393 is about 16225.6091719233. The cubic root of 263270393 is about 640.9153511775.

The spelling of 263270393 in words is "two hundred sixty-three million, two hundred seventy thousand, three hundred ninety-three".