5638493 has 4 divisors (see below), whose sum is σ = 6444000. Its totient is φ = 4832988.

The previous prime is 5638489. The next prime is 5638517. The reversal of 5638493 is 3948365.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3948365 = 5 ⋅789673.

It is a cyclic number.

It is not a de Polignac number, because 5638493 - 2² = 5638489 is a prime.

It is a super-2 number, since 2×5638493² = 63585206622098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5638433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402743 + ... + 402756.

It is an arithmetic number, because the mean of its divisors is an integer number (1611000).

Almost surely, 2^5638493 is an apocalyptic number.

It is an amenable number.

5638493 is a deficient number, since it is larger than the sum of its proper divisors (805507).

5638493 is an equidigital number, since it uses as much as digits as its factorization.

5638493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805506.

The product of its digits is 77760, while the sum is 38.

The square root of 5638493 is about 2374.5511154742. The cubic root of 5638493 is about 177.9867536328.

The spelling of 5638493 in words is "five million, six hundred thirty-eight thousand, four hundred ninety-three".