6244405 has 4 divisors (see below), whose sum is σ = 7493292. Its totient is φ = 4995520.

The previous prime is 6244391. The next prime is 6244429. The reversal of 6244405 is 5044426.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5044426 = 2 ⋅2522213.

It can be written as a sum of positive squares in 2 ways, for example, as 2792241 + 3452164 = 1671^2 + 1858^2 .

It is not a de Polignac number, because 6244405 - 2⁹ = 6243893 is a prime.

It is a Duffinian number.

6244405 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6244405.

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, 624436 + ... + 624445.

It is an arithmetic number, because the mean of its divisors is an integer number (1873323).

Almost surely, 2^6244405 is an apocalyptic number.

It is an amenable number.

6244405 is a deficient number, since it is larger than the sum of its proper divisors (1248887).

6244405 is a wasteful number, since it uses less digits than its factorization.

6244405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248886.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 6244405 is about 2498.8807494556. The cubic root of 6244405 is about 184.1465927721.

The spelling of 6244405 in words is "six million, two hundred forty-four thousand, four hundred five".