1394544447 has 12 divisors (see below), whose sum is σ = 2017463760. Its totient is φ = 928255488.

The previous prime is 1394544443. The next prime is 1394544449. The reversal of 1394544447 is 7444454931.

1394544447 is a `hidden beast` number, since 13 + 94 + 544 + 4 + 4 + 7 = 666.

It is not a de Polignac number, because 1394544447 - 2² = 1394544443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1394544443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113922 + ... + 125567.

It is an arithmetic number, because the mean of its divisors is an integer number (168121980).

Almost surely, 2^1394544447 is an apocalyptic number.

1394544447 is a deficient number, since it is larger than the sum of its proper divisors (622919313).

1394544447 is a wasteful number, since it uses less digits than its factorization.

1394544447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240142 (or 240139 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 1394544447 is about 37343.5998130871. The cubic root of 1394544447 is about 1117.2339393324.

The spelling of 1394544447 in words is "one billion, three hundred ninety-four million, five hundred forty-four thousand, four hundred forty-seven".