17989049 has 8 divisors (see below), whose sum is σ = 19439112. Its totient is φ = 16548480.

The previous prime is 17989039. The next prime is 17989063. The reversal of 17989049 is 94098971.

It can be written as a sum of positive squares in 4 ways, for example, as 11449 + 17977600 = 107^2 + 4240^2 .

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

It is not a de Polignac number, because 17989049 - 2⁸ = 17988793 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17988994 and 17989012.

It is not an unprimeable number, because it can be changed into a prime (17989039) 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, 1859 + ... + 6279.

It is an arithmetic number, because the mean of its divisors is an integer number (2429889).

Almost surely, 2^17989049 is an apocalyptic number.

It is an amenable number.

17989049 is a deficient number, since it is larger than the sum of its proper divisors (1450063).

17989049 is a wasteful number, since it uses less digits than its factorization.

17989049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 17989049 is about 4241.3499030379. The cubic root of 17989049 is about 262.0209809743.

The spelling of 17989049 in words is "seventeen million, nine hundred eighty-nine thousand, forty-nine".