1396843812 has 288 divisors, whose sum is σ = 4643475200. Its totient is φ = 355694976.

The previous prime is 1396843757. The next prime is 1396843823. The reversal of 1396843812 is 2183486931.

Its product of digits (248832) is a multiple of the sum of its prime divisors (54).

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 95 ways as a sum of consecutive naturals, for example, 48167014 + ... + 48167042.

Almost surely, 2^1396843812 is an apocalyptic number.

1396843812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396843812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2321737600).

1396843812 is an abundant number, since it is smaller than the sum of its proper divisors (3246631388).

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

1396843812 is a wasteful number, since it uses less digits than its factorization.

1396843812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 54 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 1396843812 is about 37374.3737338835. The cubic root of 1396843812 is about 1117.8476446435.

The spelling of 1396843812 in words is "one billion, three hundred ninety-six million, eight hundred forty-three thousand, eight hundred twelve".