263422447 has 2 divisors, whose sum is σ = 263422448. Its totient is φ = 263422446.

The previous prime is 263422391. The next prime is 263422487. The reversal of 263422447 is 744224362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263422447 - 2⁷ = 263422319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263422487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131711223 + 131711224.

It is an arithmetic number, because the mean of its divisors is an integer number (131711224).

Almost surely, 2^263422447 is an apocalyptic number.

263422447 is a deficient number, since it is larger than the sum of its proper divisors (1).

263422447 is an equidigital number, since it uses as much as digits as its factorization.

263422447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 34.

The square root of 263422447 is about 16230.2941131700. The cubic root of 263422447 is about 641.0387160901.

The spelling of 263422447 in words is "two hundred sixty-three million, four hundred twenty-two thousand, four hundred forty-seven".