88641979 has 2 divisors, whose sum is σ = 88641980. Its totient is φ = 88641978.

The previous prime is 88641947. The next prime is 88641997. The reversal of 88641979 is 97914688.

It is a happy number.

Together with next prime (88641997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 88641979 - 2⁵ = 88641947 is a prime.

It is not a weakly prime, because it can be changed into another prime (88641919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44320989 + 44320990.

It is an arithmetic number, because the mean of its divisors is an integer number (44320990).

Almost surely, 2^88641979 is an apocalyptic number.

88641979 is a deficient number, since it is larger than the sum of its proper divisors (1).

88641979 is an equidigital number, since it uses as much as digits as its factorization.

88641979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 52.

The square root of 88641979 is about 9414.9869357318. The cubic root of 88641979 is about 445.8750261491.

The spelling of 88641979 in words is "eighty-eight million, six hundred forty-one thousand, nine hundred seventy-nine".