16744989 has 8 divisors (see below), whose sum is σ = 23297472. Its totient is φ = 10677920.

The previous prime is 16744969. The next prime is 16744993. The reversal of 16744989 is 98944761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16744989 - 2⁸ = 16744733 is a prime.

It is a super-2 number, since 2×16744989² = 560789313220242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16744939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121272 + ... + 121409.

It is an arithmetic number, because the mean of its divisors is an integer number (2912184).

Almost surely, 2^16744989 is an apocalyptic number.

It is an amenable number.

16744989 is a deficient number, since it is larger than the sum of its proper divisors (6552483).

16744989 is a wasteful number, since it uses less digits than its factorization.

16744989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242707.

The product of its digits is 435456, while the sum is 48.

The square root of 16744989 is about 4092.0641490573. The cubic root of 16744989 is about 255.8359799359.

The spelling of 16744989 in words is "sixteen million, seven hundred forty-four thousand, nine hundred eighty-nine".