2393878 has 4 divisors (see below), whose sum is σ = 3590820. Its totient is φ = 1196938.

The previous prime is 2393873. The next prime is 2393879. The reversal of 2393878 is 8783932.

It is a happy number.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2393878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2393873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598468 + ... + 598471.

It is an arithmetic number, because the mean of its divisors is an integer number (897705).

2^2393878 is an apocalyptic number.

2393878 is a deficient number, since it is larger than the sum of its proper divisors (1196942).

2393878 is a wasteful number, since it uses less digits than its factorization.

2393878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196941.

The product of its digits is 72576, while the sum is 40.

The square root of 2393878 is about 1547.2162098427. The cubic root of 2393878 is about 133.7726522905.

The spelling of 2393878 in words is "two million, three hundred ninety-three thousand, eight hundred seventy-eight".