1393806 has 16 divisors (see below), whose sum is σ = 2802384. Its totient is φ = 462144.

The previous prime is 1393781. The next prime is 1393807. The reversal of 1393806 is 6083931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900 + ... + 1896.

It is an arithmetic number, because the mean of its divisors is an integer number (175149).

2^1393806 is an apocalyptic number.

1393806 is an abundant number, since it is smaller than the sum of its proper divisors (1408578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1393806 is a wasteful number, since it uses less digits than its factorization.

1393806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1235.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 1393806 is about 1180.5956123923. The cubic root of 1393806 is about 111.7036703186.

The spelling of 1393806 in words is "one million, three hundred ninety-three thousand, eight hundred six".