1393445982 has 16 divisors (see below), whose sum is σ = 2788947072. Its totient is φ = 464139480.

The previous prime is 1393445947. The next prime is 1393446013. The reversal of 1393445982 is 2895443931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76744 + ... + 93147.

It is an arithmetic number, because the mean of its divisors is an integer number (174309192).

Almost surely, 2^1393445982 is an apocalyptic number.

1393445982 is an abundant number, since it is smaller than the sum of its proper divisors (1395501090).

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

1393445982 is a wasteful number, since it uses less digits than its factorization.

1393445982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171263.

The product of its digits is 933120, while the sum is 48.

The square root of 1393445982 is about 37328.8893753886. The cubic root of 1393445982 is about 1116.9405186026.

The spelling of 1393445982 in words is "one billion, three hundred ninety-three million, four hundred forty-five thousand, nine hundred eighty-two".