2493989 has 8 divisors (see below), whose sum is σ = 2600640. Its totient is φ = 2389600.

The previous prime is 2493983. The next prime is 2493991. The reversal of 2493989 is 9893942.

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 2493989 - 2¹⁶ = 2428453 is a prime.

It is a super-2 number, since 2×2493989² = 12439962264242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2493983) 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, 1904 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (325080).

2^2493989 is an apocalyptic number.

It is an amenable number.

2493989 is a deficient number, since it is larger than the sum of its proper divisors (106651).

2493989 is a wasteful number, since it uses less digits than its factorization.

2493989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131.

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

The square root of 2493989 is about 1579.2368410090. The cubic root of 2493989 is about 135.6120177710.

The spelling of 2493989 in words is "two million, four hundred ninety-three thousand, nine hundred eighty-nine".