263059949 has 2 divisors, whose sum is σ = 263059950. Its totient is φ = 263059948.

The previous prime is 263059919. The next prime is 263059963. The reversal of 263059949 is 949950362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222546724 + 40513225 = 14918^2 + 6365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263059949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263059919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131529974 + 131529975.

It is an arithmetic number, because the mean of its divisors is an integer number (131529975).

Almost surely, 2^263059949 is an apocalyptic number.

It is an amenable number.

263059949 is a deficient number, since it is larger than the sum of its proper divisors (1).

263059949 is an equidigital number, since it uses as much as digits as its factorization.

263059949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 524880, while the sum is 47.

The square root of 263059949 is about 16219.1229417623. The cubic root of 263059949 is about 640.7445347249.

The spelling of 263059949 in words is "two hundred sixty-three million, fifty-nine thousand, nine hundred forty-nine".