1396991006 has 8 divisors (see below), whose sum is σ = 2163082944. Its totient is φ = 675963360.

The previous prime is 1396991003. The next prime is 1396991023. The reversal of 1396991006 is 6001996931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396991003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11265995 + ... + 11266118.

It is an arithmetic number, because the mean of its divisors is an integer number (270385368).

Almost surely, 2^1396991006 is an apocalyptic number.

1396991006 is a deficient number, since it is larger than the sum of its proper divisors (766091938).

1396991006 is a wasteful number, since it uses less digits than its factorization.

1396991006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22532146.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 1396991006 is about 37376.3428655079. The cubic root of 1396991006 is about 1117.8869080852.

The spelling of 1396991006 in words is "one billion, three hundred ninety-six million, nine hundred ninety-one thousand, six".