1396646887946 has 8 divisors (see below), whose sum is σ = 2094975382944. Its totient is φ = 698321760300.

The previous prime is 1396646887943. The next prime is 1396646887973. The reversal of 1396646887946 is 6497886466931.

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

It is not an unprimeable number, because it can be changed into a prime (1396646887943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008221 + ... + 1951871.

It is an arithmetic number, because the mean of its divisors is an integer number (261871922868).

Almost surely, 2^{1396646887946} is an apocalyptic number.

1396646887946 is a deficient number, since it is larger than the sum of its proper divisors (698328494998).

1396646887946 is an equidigital number, since it uses as much as digits as its factorization.

1396646887946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683676.

The product of its digits is 2257403904, while the sum is 77.

The spelling of 1396646887946 in words is "one trillion, three hundred ninety-six billion, six hundred forty-six million, eight hundred eighty-seven thousand, nine hundred forty-six".