88304639921 has 2 divisors, whose sum is σ = 88304639922. Its totient is φ = 88304639920.

The previous prime is 88304639909. The next prime is 88304639923. The reversal of 88304639921 is 12993640388.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65900537521 + 22404102400 = 256711^2 + 149680^2 .

It is a cyclic number.

It is not a de Polignac number, because 88304639921 - 2¹⁰ = 88304638897 is a prime.

Together with 88304639923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (88304639923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44152319960 + 44152319961.

It is an arithmetic number, because the mean of its divisors is an integer number (44152319961).

Almost surely, 2^88304639921 is an apocalyptic number.

It is an amenable number.

88304639921 is a deficient number, since it is larger than the sum of its proper divisors (1).

88304639921 is an equidigital number, since it uses as much as digits as its factorization.

88304639921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 88304639921 in words is "eighty-eight billion, three hundred four million, six hundred thirty-nine thousand, nine hundred twenty-one".