2405849 has 4 divisors (see below), whose sum is σ = 2411136. Its totient is φ = 2400564.

The previous prime is 2405833. The next prime is 2405863. The reversal of 2405849 is 9485042.

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 a cyclic number.

It is not a de Polignac number, because 2405849 - 2⁴ = 2405833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2405149) 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, 1889 + ... + 2894.

It is an arithmetic number, because the mean of its divisors is an integer number (602784).

2^2405849 is an apocalyptic number.

It is an amenable number.

2405849 is a deficient number, since it is larger than the sum of its proper divisors (5287).

2405849 is an equidigital number, since it uses as much as digits as its factorization.

2405849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 2405849 is about 1551.0799463600. The cubic root of 2405849 is about 133.9952660390.

The spelling of 2405849 in words is "two million, four hundred five thousand, eight hundred forty-nine".