2399393 has 4 divisors (see below), whose sum is σ = 2402628. Its totient is φ = 2396160.

The previous prime is 2399389. The next prime is 2399399. The reversal of 2399393 is 3939932.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1423249 + 976144 = 1193^2 + 988^2 .

It is a cyclic number.

It is not a de Polignac number, because 2399393 - 2² = 2399389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2399399) 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, 113 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (600657).

2^2399393 is an apocalyptic number.

It is an amenable number.

2399393 is a deficient number, since it is larger than the sum of its proper divisors (3235).

2399393 is a wasteful number, since it uses less digits than its factorization.

2399393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234.

The product of its digits is 39366, while the sum is 38.

The square root of 2399393 is about 1548.9974176867. The cubic root of 2399393 is about 133.8753016814.

The spelling of 2399393 in words is "two million, three hundred ninety-nine thousand, three hundred ninety-three".