2293993 has 4 divisors (see below), whose sum is σ = 2470468. Its totient is φ = 2117520.

The previous prime is 2293981. The next prime is 2294009. The reversal of 2293993 is 3993922.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1432809 + 861184 = 1197^2 + 928^2 .

It is a cyclic number.

It is not a de Polignac number, because 2293993 - 2⁵ = 2293961 is a prime.

It is a d-powerful number, because it can be written as 2 + 2²¹ + 9 + 3⁸ + 9⁴ + 9⁴ + 3¹¹ .

It is not an unprimeable number, because it can be changed into a prime (2293393) 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, 88218 + ... + 88243.

It is an arithmetic number, because the mean of its divisors is an integer number (617617).

2^2293993 is an apocalyptic number.

It is an amenable number.

2293993 is a deficient number, since it is larger than the sum of its proper divisors (176475).

2293993 is a wasteful number, since it uses less digits than its factorization.

2293993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176474.

The product of its digits is 26244, while the sum is 37.

The square root of 2293993 is about 1514.5933447629. The cubic root of 2293993 is about 131.8855949350.

It can be divided in two parts, 22939 and 93, that added together give a palindrome (23032).

The spelling of 2293993 in words is "two million, two hundred ninety-three thousand, nine hundred ninety-three".