32320399 has 2 divisors, whose sum is σ = 32320400. Its totient is φ = 32320398.

The previous prime is 32320381. The next prime is 32320429. The reversal of 32320399 is 99302323.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32320399 - 2⁷ = 32320271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32320399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32320319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16160199 + 16160200.

It is an arithmetic number, because the mean of its divisors is an integer number (16160200).

Almost surely, 2^32320399 is an apocalyptic number.

32320399 is a deficient number, since it is larger than the sum of its proper divisors (1).

32320399 is an equidigital number, since it uses as much as digits as its factorization.

32320399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 31.

The square root of 32320399 is about 5685.1032532400. The cubic root of 32320399 is about 318.5362804691.

The spelling of 32320399 in words is "thirty-two million, three hundred twenty thousand, three hundred ninety-nine".