1396843794 has 48 divisors (see below), whose sum is σ = 3212646840. Its totient is φ = 437114880.

The previous prime is 1396843757. The next prime is 1396843823. The reversal of 1396843794 is 4973486931.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1258475625 + 138368169 = 35475^2 + 11763^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1396843794.

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 23 ways as a sum of consecutive naturals, for example, 119574 + ... + 130734.

Almost surely, 2^1396843794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396843794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606323420).

1396843794 is an abundant number, since it is smaller than the sum of its proper divisors (1815803046).

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

1396843794 is a wasteful number, since it uses less digits than its factorization.

1396843794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11595 (or 11592 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 1396843794 is about 37374.3734930768. The cubic root of 1396843794 is about 1117.8476398419.

The spelling of 1396843794 in words is "one billion, three hundred ninety-six million, eight hundred forty-three thousand, seven hundred ninety-four".