16273489 has 4 divisors (see below), whose sum is σ = 16981056. Its totient is φ = 15565924.

The previous prime is 16273487. The next prime is 16273493. The reversal of 16273489 is 98437261.

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 16273489 - 2¹ = 16273487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16273487) 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, 353749 + ... + 353794.

It is an arithmetic number, because the mean of its divisors is an integer number (4245264).

Almost surely, 2^16273489 is an apocalyptic number.

It is an amenable number.

16273489 is a deficient number, since it is larger than the sum of its proper divisors (707567).

16273489 is an equidigital number, since it uses as much as digits as its factorization.

16273489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707566.

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

The square root of 16273489 is about 4034.0412739584. The cubic root of 16273489 is about 253.4118337443.

The spelling of 16273489 in words is "sixteen million, two hundred seventy-three thousand, four hundred eighty-nine".