1405834 has 8 divisors (see below), whose sum is σ = 2137860. Its totient is φ = 693216.

The previous prime is 1405823. The next prime is 1405841. The reversal of 1405834 is 4385041.

It can be written as a sum of positive squares in 2 ways, for example, as 1216609 + 189225 = 1103^2 + 435^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1405799 and 1405808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4669 + ... + 4960.

2^1405834 is an apocalyptic number.

1405834 is a deficient number, since it is larger than the sum of its proper divisors (732026).

1405834 is an equidigital number, since it uses as much as digits as its factorization.

1405834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9704.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1405834 is about 1185.6787085885. The cubic root of 1405834 is about 112.0240700818.

The spelling of 1405834 in words is "one million, four hundred five thousand, eight hundred thirty-four".