16532489 has 4 divisors (see below), whose sum is σ = 17402640. Its totient is φ = 15662340.

The previous prime is 16532473. The next prime is 16532507. The reversal of 16532489 is 98423561.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 16532489 - 2⁴ = 16532473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16532459) 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, 435047 + ... + 435084.

It is an arithmetic number, because the mean of its divisors is an integer number (4350660).

Almost surely, 2^16532489 is an apocalyptic number.

16532489 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

16532489 is a deficient number, since it is larger than the sum of its proper divisors (870151).

16532489 is an equidigital number, since it uses as much as digits as its factorization.

16532489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870150.

The product of its digits is 51840, while the sum is 38.

The square root of 16532489 is about 4066.0163551073. The cubic root of 16532489 is about 254.7491522670.

The spelling of 16532489 in words is "sixteen million, five hundred thirty-two thousand, four hundred eighty-nine".