2489993 has 8 divisors (see below), whose sum is σ = 2768256. Its totient is φ = 2220400.

The previous prime is 2489947. The next prime is 2489999. The reversal of 2489993 is 3999842.

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 2489993 - 2¹² = 2485897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2489999) 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 7 ways as a sum of consecutive naturals, for example, 1553 + ... + 2718.

It is an arithmetic number, because the mean of its divisors is an integer number (346032).

2^2489993 is an apocalyptic number.

It is an amenable number.

2489993 is a deficient number, since it is larger than the sum of its proper divisors (278263).

2489993 is a wasteful number, since it uses less digits than its factorization.

2489993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335.

The product of its digits is 139968, while the sum is 44.

The square root of 2489993 is about 1577.9711657695. The cubic root of 2489993 is about 135.5395508243.

The spelling of 2489993 in words is "two million, four hundred eighty-nine thousand, nine hundred ninety-three".