1394905 has 4 divisors (see below), whose sum is σ = 1673892. Its totient is φ = 1115920.

The previous prime is 1394893. The next prime is 1394909. The reversal of 1394905 is 5094931.

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 488601 + 906304 = 699^2 + 952^2 .

It is not a de Polignac number, because 1394905 - 2⁷ = 1394777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1394909) 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, 139486 + ... + 139495.

It is an arithmetic number, because the mean of its divisors is an integer number (418473).

2^1394905 is an apocalyptic number.

It is an amenable number.

1394905 is a deficient number, since it is larger than the sum of its proper divisors (278987).

1394905 is an equidigital number, since it uses as much as digits as its factorization.

1394905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278986.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1394905 is about 1181.0609637102. The cubic root of 1394905 is about 111.7330216254.

The spelling of 1394905 in words is "one million, three hundred ninety-four thousand, nine hundred five".