4921993 has 8 divisors (see below), whose sum is σ = 5231520. Its totient is φ = 4614720.

The previous prime is 4921949. The next prime is 4922011. The reversal of 4921993 is 3991294.

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 4921993 - 2¹³ = 4913801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4921913) 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, 6778 + ... + 7468.

It is an arithmetic number, because the mean of its divisors is an integer number (653940).

Almost surely, 2^4921993 is an apocalyptic number.

It is an amenable number.

4921993 is a deficient number, since it is larger than the sum of its proper divisors (309527).

4921993 is a wasteful number, since it uses less digits than its factorization.

4921993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127.

The product of its digits is 17496, while the sum is 37.

The square root of 4921993 is about 2218.5565126902. The cubic root of 4921993 is about 170.1036622664.

It can be divided in two parts, 492 and 1993, that added together give a triangular number (2485 = T₇₀).

The spelling of 4921993 in words is "four million, nine hundred twenty-one thousand, nine hundred ninety-three".