16089729 has 4 divisors (see below), whose sum is σ = 21452976. Its totient is φ = 10726484.

The previous prime is 16089727. The next prime is 16089737. The reversal of 16089729 is 92798061.

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 16089729 - 2¹ = 16089727 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (16089721) 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, 2681619 + ... + 2681624.

It is an arithmetic number, because the mean of its divisors is an integer number (5363244).

Almost surely, 2^16089729 is an apocalyptic number.

It is an amenable number.

16089729 is a deficient number, since it is larger than the sum of its proper divisors (5363247).

16089729 is an equidigital number, since it uses as much as digits as its factorization.

16089729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363246.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 16089729 is about 4011.2004437575. The cubic root of 16089729 is about 252.4543798900.

Adding to 16089729 its product of nonzero digits (54432), we get a palindrome (16144161).

The spelling of 16089729 in words is "sixteen million, eighty-nine thousand, seven hundred twenty-nine".