1389676446 has 16 divisors (see below), whose sum is σ = 3088170000. Its totient is φ = 463225464.

The previous prime is 1389676429. The next prime is 1389676447. The reversal of 1389676446 is 6446769831.

1389676446 is a `hidden beast` number, since 138 + 9 + 67 + 6 + 446 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 25734749 = 1389676446 / (1 + 3 + 8 + 9 + 6 + 7 + 6 + 4 + 4 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 1389676392 and 1389676401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389676447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12867321 + ... + 12867428.

It is an arithmetic number, because the mean of its divisors is an integer number (193010625).

Almost surely, 2^1389676446 is an apocalyptic number.

1389676446 is an abundant number, since it is smaller than the sum of its proper divisors (1698493554).

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

1389676446 is a wasteful number, since it uses less digits than its factorization.

1389676446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25734760 (or 25734754 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The square root of 1389676446 is about 37278.3643149750. The cubic root of 1389676446 is about 1115.9324302945.

The spelling of 1389676446 in words is "one billion, three hundred eighty-nine million, six hundred seventy-six thousand, four hundred forty-six".