1396843808 has 12 divisors (see below), whose sum is σ = 2750036310. Its totient is φ = 698421888.

The previous prime is 1396843757. The next prime is 1396843823. The reversal of 1396843808 is 8083486931.

It can be written as a sum of positive squares in only one way, i.e., 1328748304 + 68095504 = 36452^2 + 8252^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21825653 + ... + 21825716.

Almost surely, 2^1396843808 is an apocalyptic number.

It is an amenable number.

1396843808 is a deficient number, since it is larger than the sum of its proper divisors (1353192502).

1396843808 is an equidigital number, since it uses as much as digits as its factorization.

1396843808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43651379 (or 43651371 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 1396843808 is about 37374.3736803709. The cubic root of 1396843808 is about 1117.8476435764.

The spelling of 1396843808 in words is "one billion, three hundred ninety-six million, eight hundred forty-three thousand, eight hundred eight".