17990983 has 2 divisors, whose sum is σ = 17990984. Its totient is φ = 17990982.

The previous prime is 17990969. The next prime is 17991007. The reversal of 17990983 is 38909971.

It is a weak prime.

It is an emirp because it is prime and its reverse (38909971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 17990983 - 2¹³ = 17982791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17990953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8995491 + 8995492.

It is an arithmetic number, because the mean of its divisors is an integer number (8995492).

Almost surely, 2^17990983 is an apocalyptic number.

17990983 is a deficient number, since it is larger than the sum of its proper divisors (1).

17990983 is an equidigital number, since it uses as much as digits as its factorization.

17990983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 17990983 is about 4241.5778903611. The cubic root of 17990983 is about 262.0303705834.

The spelling of 17990983 in words is "seventeen million, nine hundred ninety thousand, nine hundred eighty-three".