2405423609 has 4 divisors (see below), whose sum is σ = 2407871616. Its totient is φ = 2402975604.

The previous prime is 2405423599. The next prime is 2405423621. The reversal of 2405423609 is 9063245042.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9063245042 = 2 ⋅4531622521.

It is a cyclic number.

It is not a de Polignac number, because 2405423609 - 2⁴ = 2405423593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2405423689) 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, 1222529 + ... + 1224494.

It is an arithmetic number, because the mean of its divisors is an integer number (601967904).

Almost surely, 2^2405423609 is an apocalyptic number.

It is an amenable number.

2405423609 is a deficient number, since it is larger than the sum of its proper divisors (2448007).

2405423609 is an equidigital number, since it uses as much as digits as its factorization.

2405423609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448006.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2405423609 is about 49045.1180954843. The cubic root of 2405423609 is about 1339.8736810086.

The spelling of 2405423609 in words is "two billion, four hundred five million, four hundred twenty-three thousand, six hundred nine".