32198993 has 2 divisors, whose sum is σ = 32198994. Its totient is φ = 32198992.

The previous prime is 32198983. The next prime is 32199001. The reversal of 32198993 is 39989123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19864849 + 12334144 = 4457^2 + 3512^2 .

It is a cyclic number.

It is not a de Polignac number, because 32198993 - 2⁸ = 32198737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (32198923) 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, 16099496 + 16099497.

It is an arithmetic number, because the mean of its divisors is an integer number (16099497).

Almost surely, 2^32198993 is an apocalyptic number.

It is an amenable number.

32198993 is a deficient number, since it is larger than the sum of its proper divisors (1).

32198993 is an equidigital number, since it uses as much as digits as its factorization.

32198993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 104976, while the sum is 44.

The square root of 32198993 is about 5674.4156527346. The cubic root of 32198993 is about 318.1369378454.

The spelling of 32198993 in words is "thirty-two million, one hundred ninety-eight thousand, nine hundred ninety-three".