2440385 has 8 divisors (see below), whose sum is σ = 2984040. Its totient is φ = 1915264.

The previous prime is 2440363. The next prime is 2440387. The reversal of 2440385 is 5830442.

It can be written as a sum of positive squares in 4 ways, for example, as 142129 + 2298256 = 377^2 + 1516^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2440385 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2440387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4340 + ... + 4869.

It is an arithmetic number, because the mean of its divisors is an integer number (373005).

2^2440385 is an apocalyptic number.

It is an amenable number.

2440385 is a deficient number, since it is larger than the sum of its proper divisors (543655).

2440385 is an equidigital number, since it uses as much as digits as its factorization.

2440385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9267.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 2440385 is about 1562.1731658174. The cubic root of 2440385 is about 134.6333903283.

The spelling of 2440385 in words is "two million, four hundred forty thousand, three hundred eighty-five".