4401993 has 16 divisors (see below), whose sum is σ = 6183936. Its totient is φ = 2779920.

The previous prime is 4401989. The next prime is 4402003. The reversal of 4401993 is 3991044.

It is not a de Polignac number, because 4401993 - 2² = 4401989 is a prime.

It is an Ulam 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 4401993.

It is not an unprimeable number, because it can be changed into a prime (4401923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8796 + ... + 9282.

It is an arithmetic number, because the mean of its divisors is an integer number (386496).

Almost surely, 2^4401993 is an apocalyptic number.

It is an amenable number.

4401993 is a deficient number, since it is larger than the sum of its proper divisors (1781943).

4401993 is a wasteful number, since it uses less digits than its factorization.

4401993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 4401993 is about 2098.0927052921. The cubic root of 4401993 is about 163.8889914051. Note that the first 3 decimals are identical.

The spelling of 4401993 in words is "four million, four hundred one thousand, nine hundred ninety-three".