16432789 has 4 divisors (see below), whose sum is σ = 16486624. Its totient is φ = 16378956.

The previous prime is 16432781. The next prime is 16432807. The reversal of 16432789 is 98723461.

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: 98723461 = 59 ⋅1673279.

It is a cyclic number.

It is not a de Polignac number, because 16432789 - 2³ = 16432781 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16432781) 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, 26457 + ... + 27070.

It is an arithmetic number, because the mean of its divisors is an integer number (4121656).

Almost surely, 2^16432789 is an apocalyptic number.

It is an amenable number.

16432789 is a deficient number, since it is larger than the sum of its proper divisors (53835).

16432789 is an equidigital number, since it uses as much as digits as its factorization.

16432789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53834.

The product of its digits is 72576, while the sum is 40.

The square root of 16432789 is about 4053.7376580139. The cubic root of 16432789 is about 254.2360269123.

The spelling of 16432789 in words is "sixteen million, four hundred thirty-two thousand, seven hundred eighty-nine".