88644289 has 2 divisors, whose sum is σ = 88644290. Its totient is φ = 88644288.

The previous prime is 88644247. The next prime is 88644293. The reversal of 88644289 is 98244688.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65286400 + 23357889 = 8080^2 + 4833^2 .

It is a cyclic number.

It is not a de Polignac number, because 88644289 - 2⁷ = 88644161 is a prime.

It is not a weakly prime, because it can be changed into another prime (88644229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44322144 + 44322145.

It is an arithmetic number, because the mean of its divisors is an integer number (44322145).

Almost surely, 2^88644289 is an apocalyptic number.

It is an amenable number.

88644289 is a deficient number, since it is larger than the sum of its proper divisors (1).

88644289 is an equidigital number, since it uses as much as digits as its factorization.

88644289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 884736, while the sum is 49.

The square root of 88644289 is about 9415.1096116827. The cubic root of 88644289 is about 445.8788992665.

The spelling of 88644289 in words is "eighty-eight million, six hundred forty-four thousand, two hundred eighty-nine".