4121993 has 4 divisors (see below), whose sum is σ = 4338960. Its totient is φ = 3905028.

The previous prime is 4121987. The next prime is 4122043. The reversal of 4121993 is 3991214.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3991214 = 2 ⋅1995607.

It is a cyclic number.

It is not a de Polignac number, because 4121993 - 2⁸ = 4121737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4121903) 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, 108455 + ... + 108492.

It is an arithmetic number, because the mean of its divisors is an integer number (1084740).

Almost surely, 2^4121993 is an apocalyptic number.

It is an amenable number.

4121993 is a deficient number, since it is larger than the sum of its proper divisors (216967).

4121993 is a wasteful number, since it uses less digits than its factorization.

4121993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216966.

The product of its digits is 1944, while the sum is 29.

The square root of 4121993 is about 2030.2691939740. The cubic root of 4121993 is about 160.3377371045.

The spelling of 4121993 in words is "four million, one hundred twenty-one thousand, nine hundred ninety-three".