4993921 has 8 divisors (see below), whose sum is σ = 5244480. Its totient is φ = 4746192.

The previous prime is 4993913. The next prime is 4993931. The reversal of 4993921 is 1293994.

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 4993921 - 2³ = 4993913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4993931) 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, 3511 + ... + 4723.

It is an arithmetic number, because the mean of its divisors is an integer number (655560).

Almost surely, 2^4993921 is an apocalyptic number.

It is an amenable number.

4993921 is a deficient number, since it is larger than the sum of its proper divisors (250559).

4993921 is a wasteful number, since it uses less digits than its factorization.

4993921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415.

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

The square root of 4993921 is about 2234.7082583639. The cubic root of 4993921 is about 170.9282669387.

The spelling of 4993921 in words is "four million, nine hundred ninety-three thousand, nine hundred twenty-one".