263890793 has 2 divisors, whose sum is σ = 263890794. Its totient is φ = 263890792.

The previous prime is 263890769. The next prime is 263890831. The reversal of 263890793 is 397098362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209323024 + 54567769 = 14468^2 + 7387^2 .

It is a cyclic number.

It is not a de Polignac number, because 263890793 - 2¹² = 263886697 is a prime.

It is not a weakly prime, because it can be changed into another prime (263890733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131945396 + 131945397.

It is an arithmetic number, because the mean of its divisors is an integer number (131945397).

Almost surely, 2^263890793 is an apocalyptic number.

It is an amenable number.

263890793 is a deficient number, since it is larger than the sum of its proper divisors (1).

263890793 is an equidigital number, since it uses as much as digits as its factorization.

263890793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 263890793 is about 16244.7158485460. The cubic root of 263890793 is about 641.4183979404.

The spelling of 263890793 in words is "two hundred sixty-three million, eight hundred ninety thousand, seven hundred ninety-three".