4011993 has 12 divisors (see below), whose sum is σ = 5824000. Its totient is φ = 2661336.

The previous prime is 4011991. The next prime is 4012013. The reversal of 4011993 is 3991104.

It is not a de Polignac number, because 4011993 - 2¹ = 4011991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4011991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1008 + ... + 3006.

Almost surely, 2^4011993 is an apocalyptic number.

It is an amenable number.

4011993 is a deficient number, since it is larger than the sum of its proper divisors (1812007).

4011993 is a wasteful number, since it uses less digits than its factorization.

4011993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 4011993 is about 2002.9960059870. The cubic root of 4011993 is about 158.8985944122.

The spelling of 4011993 in words is "four million, eleven thousand, nine hundred ninety-three".