9505223887 has 2 divisors, whose sum is σ = 9505223888. Its totient is φ = 9505223886.

The previous prime is 9505223873. The next prime is 9505223933. The reversal of 9505223887 is 7883225059.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9505223887 - 2²⁷ = 9371006159 is a prime.

It is a super-2 number, since 2×9505223887² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9505223887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9505223837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4752611943 + 4752611944.

It is an arithmetic number, because the mean of its divisors is an integer number (4752611944).

Almost surely, 2^9505223887 is an apocalyptic number.

9505223887 is a deficient number, since it is larger than the sum of its proper divisors (1).

9505223887 is an equidigital number, since it uses as much as digits as its factorization.

9505223887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 49.

The square root of 9505223887 is about 97494.7377400442. The cubic root of 9505223887 is about 2118.2999221127.

The spelling of 9505223887 in words is "nine billion, five hundred five million, two hundred twenty-three thousand, eight hundred eighty-seven".