11998493 has 6 divisors (see below), whose sum is σ = 12992634. Its totient is φ = 11075376.

The previous prime is 11998487. The next prime is 11998501. The reversal of 11998493 is 39489911.

It can be written as a sum of positive squares in 3 ways, for example, as 996004 + 11002489 = 998^2 + 3317^2 .

It is not a de Polignac number, because 11998493 - 2¹² = 11994397 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 (11992493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35330 + ... + 35667.

It is an arithmetic number, because the mean of its divisors is an integer number (2165439).

Almost surely, 2^11998493 is an apocalyptic number.

11998493 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11998493 is a deficient number, since it is larger than the sum of its proper divisors (994141).

11998493 is an equidigital number, since it uses as much as digits as its factorization.

11998493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71023 (or 71010 counting only the distinct ones).

The product of its digits is 69984, while the sum is 44.

The square root of 11998493 is about 3463.8840915943. The cubic root of 11998493 is about 228.9332643074.

The spelling of 11998493 in words is "eleven million, nine hundred ninety-eight thousand, four hundred ninety-three".