2493809 has 8 divisors (see below), whose sum is σ = 2564352. Its totient is φ = 2424240.

The previous prime is 2493779. The next prime is 2493817. The reversal of 2493809 is 9083942.

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 2493809 - 2¹² = 2489713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2493859) 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, 11072 + ... + 11294.

It is an arithmetic number, because the mean of its divisors is an integer number (320544).

2^2493809 is an apocalyptic number.

It is an amenable number.

2493809 is a deficient number, since it is larger than the sum of its proper divisors (70543).

2493809 is a wasteful number, since it uses less digits than its factorization.

2493809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2493809 is about 1579.1798504287. The cubic root of 2493809 is about 135.6087551596.

The spelling of 2493809 in words is "two million, four hundred ninety-three thousand, eight hundred nine".