1396905 has 16 divisors (see below), whose sum is σ = 2332800. Its totient is φ = 712448.

The previous prime is 1396903. The next prime is 1396909. The reversal of 1396905 is 5096931.

It is not a de Polignac number, because 1396905 - 2¹ = 1396903 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1396903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1680 + ... + 2369.

It is an arithmetic number, because the mean of its divisors is an integer number (145800).

2^1396905 is an apocalyptic number.

1396905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1396905 is a deficient number, since it is larger than the sum of its proper divisors (935895).

1396905 is a wasteful number, since it uses less digits than its factorization.

1396905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 1396905 is about 1181.9073567755. The cubic root of 1396905 is about 111.7863966646.

The spelling of 1396905 in words is "one million, three hundred ninety-six thousand, nine hundred five".