16322489 has 4 divisors (see below), whose sum is σ = 16669824. Its totient is φ = 15975156.

The previous prime is 16322483. The next prime is 16322507. The reversal of 16322489 is 98422361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98422361 = 2521 ⋅39041.

It is a cyclic number.

It is not a de Polignac number, because 16322489 - 2⁸ = 16322233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16322483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173597 + ... + 173690.

It is an arithmetic number, because the mean of its divisors is an integer number (4167456).

Almost surely, 2^16322489 is an apocalyptic number.

It is an amenable number.

16322489 is a deficient number, since it is larger than the sum of its proper divisors (347335).

16322489 is an equidigital number, since it uses as much as digits as its factorization.

16322489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347334.

The product of its digits is 20736, while the sum is 35.

The square root of 16322489 is about 4040.1100232543. The cubic root of 16322489 is about 253.6659226250.

The spelling of 16322489 in words is "sixteen million, three hundred twenty-two thousand, four hundred eighty-nine".