88191893 has 2 divisors, whose sum is σ = 88191894. Its totient is φ = 88191892.

The previous prime is 88191847. The next prime is 88191907. The reversal of 88191893 is 39819188.

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., 69338929 + 18852964 = 8327^2 + 4342^2 .

It is a cyclic number.

It is not a de Polignac number, because 88191893 - 2¹⁴ = 88175509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88191823) 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, 44095946 + 44095947.

It is an arithmetic number, because the mean of its divisors is an integer number (44095947).

Almost surely, 2^88191893 is an apocalyptic number.

It is an amenable number.

88191893 is a deficient number, since it is larger than the sum of its proper divisors (1).

88191893 is an equidigital number, since it uses as much as digits as its factorization.

88191893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 47.

The square root of 88191893 is about 9391.0538812212. The cubic root of 88191893 is about 445.1190911323.

The spelling of 88191893 in words is "eighty-eight million, one hundred ninety-one thousand, eight hundred ninety-three".