223948798987 has 2 divisors, whose sum is σ = 223948798988. Its totient is φ = 223948798986.

The previous prime is 223948798973. The next prime is 223948799033. The reversal of 223948798987 is 789897849322.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223948798987 is a prime.

It is not a weakly prime, because it can be changed into another prime (223948708987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111974399493 + 111974399494.

It is an arithmetic number, because the mean of its divisors is an integer number (111974399494).

Almost surely, 2^223948798987 is an apocalyptic number.

223948798987 is a deficient number, since it is larger than the sum of its proper divisors (1).

223948798987 is an equidigital number, since it uses as much as digits as its factorization.

223948798987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 877879296, while the sum is 76.

The spelling of 223948798987 in words is "two hundred twenty-three billion, nine hundred forty-eight million, seven hundred ninety-eight thousand, nine hundred eighty-seven".