32298991 has 2 divisors, whose sum is σ = 32298992. Its totient is φ = 32298990.

The previous prime is 32298949. The next prime is 32299009. The reversal of 32298991 is 19989223.

It is a strong prime.

It is an emirp because it is prime and its reverse (19989223) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32298991 - 2⁷ = 32298863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32298941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16149495 + 16149496.

It is an arithmetic number, because the mean of its divisors is an integer number (16149496).

Almost surely, 2^32298991 is an apocalyptic number.

32298991 is a deficient number, since it is larger than the sum of its proper divisors (1).

32298991 is an equidigital number, since it uses as much as digits as its factorization.

32298991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 32298991 is about 5683.2201259497. The cubic root of 32298991 is about 318.4659355160.

The spelling of 32298991 in words is "thirty-two million, two hundred ninety-eight thousand, nine hundred ninety-one".