4993639 has 12 divisors (see below), whose sum is σ = 5847744. Its totient is φ = 4251744.

The previous prime is 4993627. The next prime is 4993661. The reversal of 4993639 is 9363994.

It is a happy number.

4993639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-4993639 is a prime.

It is an Ulam number.

4993639 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4993595 and 4993604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4993619) 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 11 ways as a sum of consecutive naturals, for example, 10699 + ... + 11155.

It is an arithmetic number, because the mean of its divisors is an integer number (487312).

Almost surely, 2^4993639 is an apocalyptic number.

4993639 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

4993639 is a deficient number, since it is larger than the sum of its proper divisors (854105).

4993639 is a wasteful number, since it uses less digits than its factorization.

4993639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 687 counting only the distinct ones).

The product of its digits is 157464, while the sum is 43.

The square root of 4993639 is about 2234.6451619888. The cubic root of 4993639 is about 170.9250495150.

The spelling of 4993639 in words is "four million, nine hundred ninety-three thousand, six hundred thirty-nine".