2390865 has 16 divisors (see below), whose sum is σ = 4027200. Its totient is φ = 1207872.

The previous prime is 2390849. The next prime is 2390879. The reversal of 2390865 is 5680932.

It is a happy number.

2390865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2390865 - 2⁴ = 2390849 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3910 + ... + 4479.

It is an arithmetic number, because the mean of its divisors is an integer number (251700).

2^2390865 is an apocalyptic number.

It is an amenable number.

2390865 is a deficient number, since it is larger than the sum of its proper divisors (1636335).

2390865 is a wasteful number, since it uses less digits than its factorization.

2390865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8416.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2390865 is about 1546.2422190588. The cubic root of 2390865 is about 133.7165054277.

The spelling of 2390865 in words is "two million, three hundred ninety thousand, eight hundred sixty-five".