2385921 has 4 divisors (see below), whose sum is σ = 3181232. Its totient is φ = 1590612.

The previous prime is 2385919. The next prime is 2385931. The reversal of 2385921 is 1295832.

It is a happy number.

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 not a de Polignac number, because 2385921 - 2¹ = 2385919 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2385931) 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, 397651 + ... + 397656.

It is an arithmetic number, because the mean of its divisors is an integer number (795308).

It is a Proth number, since it is equal to 1165 ⋅ 2¹¹ + 1 and 1165 < 2¹¹.

2^2385921 is an apocalyptic number.

It is an amenable number.

2385921 is a deficient number, since it is larger than the sum of its proper divisors (795311).

2385921 is an equidigital number, since it uses as much as digits as its factorization.

2385921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795310.

The product of its digits is 4320, while the sum is 30.

The square root of 2385921 is about 1544.6426771263. The cubic root of 2385921 is about 133.6242723359.

The spelling of 2385921 in words is "two million, three hundred eighty-five thousand, nine hundred twenty-one".