88216993 has 2 divisors, whose sum is σ = 88216994. Its totient is φ = 88216992.

The previous prime is 88216987. The next prime is 88217027. The reversal of 88216993 is 39961288.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 17539344 = 8407^2 + 4188^2 .

It is a cyclic number.

It is not a de Polignac number, because 88216993 - 2²⁵ = 54662561 is a prime.

It is not a weakly prime, because it can be changed into another prime (88216393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44108496 + 44108497.

It is an arithmetic number, because the mean of its divisors is an integer number (44108497).

Almost surely, 2^88216993 is an apocalyptic number.

It is an amenable number.

88216993 is a deficient number, since it is larger than the sum of its proper divisors (1).

88216993 is an equidigital number, since it uses as much as digits as its factorization.

88216993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 88216993 is about 9392.3901643831. The cubic root of 88216993 is about 445.1613150792.

The spelling of 88216993 in words is "eighty-eight million, two hundred sixteen thousand, nine hundred ninety-three".