2863993 has 4 divisors (see below), whose sum is σ = 3124368. Its totient is φ = 2603620.

The previous prime is 2863979. The next prime is 2864021. The reversal of 2863993 is 3993682.

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.

It is a cyclic number.

It is not a de Polignac number, because 2863993 - 2¹⁷ = 2732921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2863943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130171 + ... + 130192.

It is an arithmetic number, because the mean of its divisors is an integer number (781092).

2^2863993 is an apocalyptic number.

It is an amenable number.

2863993 is a deficient number, since it is larger than the sum of its proper divisors (260375).

2863993 is a wasteful number, since it uses less digits than its factorization.

2863993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260374.

The product of its digits is 69984, while the sum is 40.

The square root of 2863993 is about 1692.3335959556. Note that the first 3 decimals coincide. The cubic root of 2863993 is about 142.0116534773.

The spelling of 2863993 in words is "two million, eight hundred sixty-three thousand, nine hundred ninety-three".