16244789 has 4 divisors (see below), whose sum is σ = 17721600. Its totient is φ = 14767980.

The previous prime is 16244783. The next prime is 16244797. The reversal of 16244789 is 98744261.

16244789 = 2326² + 2327² + 2328².

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 16244789 - 2¹⁶ = 16179253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16244783) 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, 738389 + ... + 738410.

It is an arithmetic number, because the mean of its divisors is an integer number (4430400).

Almost surely, 2^16244789 is an apocalyptic number.

It is an amenable number.

16244789 is a deficient number, since it is larger than the sum of its proper divisors (1476811).

16244789 is a wasteful number, since it uses less digits than its factorization.

16244789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476810.

The product of its digits is 96768, while the sum is 41.

The square root of 16244789 is about 4030.4824773220. The cubic root of 16244789 is about 253.2627733238.

The spelling of 16244789 in words is "sixteen million, two hundred forty-four thousand, seven hundred eighty-nine".