2438405 has 4 divisors (see below), whose sum is σ = 2926092. Its totient is φ = 1950720.

The previous prime is 2438399. The next prime is 2438413. The reversal of 2438405 is 5048342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1442401 + 996004 = 1201^2 + 998^2 .

It is not a de Polignac number, because 2438405 - 2⁶ = 2438341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243836 + ... + 243845.

It is an arithmetic number, because the mean of its divisors is an integer number (731523).

2^2438405 is an apocalyptic number.

It is an amenable number.

2438405 is a deficient number, since it is larger than the sum of its proper divisors (487687).

2438405 is an equidigital number, since it uses as much as digits as its factorization.

2438405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487686.

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

The square root of 2438405 is about 1561.5393046606. The cubic root of 2438405 is about 134.5969689931.

The spelling of 2438405 in words is "two million, four hundred thirty-eight thousand, four hundred five".