263049979 has 2 divisors, whose sum is σ = 263049980. Its totient is φ = 263049978.

The previous prime is 263049961. The next prime is 263050009. The reversal of 263049979 is 979940362.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 263049979 - 2⁹ = 263049467 is a prime.

It is not a weakly prime, because it can be changed into another prime (263049779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131524989 + 131524990.

It is an arithmetic number, because the mean of its divisors is an integer number (131524990).

Almost surely, 2^263049979 is an apocalyptic number.

263049979 is a deficient number, since it is larger than the sum of its proper divisors (1).

263049979 is an equidigital number, since it uses as much as digits as its factorization.

263049979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 263049979 is about 16218.8155856092. The cubic root of 263049979 is about 640.7364398606.

The spelling of 263049979 in words is "two hundred sixty-three million, forty-nine thousand, nine hundred seventy-nine".