4961993 has 4 divisors (see below), whose sum is σ = 4984080. Its totient is φ = 4939908.

The previous prime is 4961969. The next prime is 4962037. The reversal of 4961993 is 3991694.

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.

It is a cyclic number.

It is not a de Polignac number, because 4961993 - 2¹⁴ = 4945609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4961993.

It is not an unprimeable number, because it can be changed into a prime (4961903) 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 3 ways as a sum of consecutive naturals, for example, 10703 + ... + 11156.

It is an arithmetic number, because the mean of its divisors is an integer number (1246020).

Almost surely, 2^4961993 is an apocalyptic number.

It is an amenable number.

4961993 is a deficient number, since it is larger than the sum of its proper divisors (22087).

4961993 is a wasteful number, since it uses less digits than its factorization.

4961993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22086.

The product of its digits is 52488, while the sum is 41.

The square root of 4961993 is about 2227.5531419026. The cubic root of 4961993 is about 170.5632184736.

Subtracting from 4961993 its reverse (3991694), we obtain a cube (970299 = 99³).

The spelling of 4961993 in words is "four million, nine hundred sixty-one thousand, nine hundred ninety-three".