17240989 has 4 divisors (see below), whose sum is σ = 17261920. Its totient is φ = 17220060.

The previous prime is 17240957. The next prime is 17241011. The reversal of 17240989 is 98904271.

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 17240989 - 2⁵ = 17240957 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 (17240089) 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, 9177 + ... + 10894.

It is an arithmetic number, because the mean of its divisors is an integer number (4315480).

Almost surely, 2^17240989 is an apocalyptic number.

It is an amenable number.

17240989 is a deficient number, since it is larger than the sum of its proper divisors (20931).

17240989 is an equidigital number, since it uses as much as digits as its factorization.

17240989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20930.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 17240989 is about 4152.2269928317. The cubic root of 17240989 is about 258.3374637795.

The spelling of 17240989 in words is "seventeen million, two hundred forty thousand, nine hundred eighty-nine".