32297989 has 2 divisors, whose sum is σ = 32297990. Its totient is φ = 32297988.

The previous prime is 32297983. The next prime is 32298017. The reversal of 32297989 is 98979223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23357889 + 8940100 = 4833^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 32297989 - 2⁷ = 32297861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32297983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16148994 + 16148995.

It is an arithmetic number, because the mean of its divisors is an integer number (16148995).

Almost surely, 2^32297989 is an apocalyptic number.

It is an amenable number.

32297989 is a deficient number, since it is larger than the sum of its proper divisors (1).

32297989 is an equidigital number, since it uses as much as digits as its factorization.

32297989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 49.

The square root of 32297989 is about 5683.1319710174. The cubic root of 32297989 is about 318.4626422638.

The spelling of 32297989 in words is "thirty-two million, two hundred ninety-seven thousand, nine hundred eighty-nine".