1393983243 has 8 divisors (see below), whose sum is σ = 2065160400. Its totient is φ = 929322144.

The previous prime is 1393983191. The next prime is 1393983301. The reversal of 1393983243 is 3423893931.

1393983243 is a `hidden beast` number, since 13 + 9 + 398 + 3 + 243 = 666.

It is not a de Polignac number, because 1393983243 - 2⁹ = 1393982731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1393983343) 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, 25814478 + ... + 25814531.

It is an arithmetic number, because the mean of its divisors is an integer number (258145050).

Almost surely, 2^1393983243 is an apocalyptic number.

1393983243 is a deficient number, since it is larger than the sum of its proper divisors (671177157).

1393983243 is an equidigital number, since it uses as much as digits as its factorization.

1393983243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51629018 (or 51629012 counting only the distinct ones).

The product of its digits is 419904, while the sum is 45.

The square root of 1393983243 is about 37336.0849982962. The cubic root of 1393983243 is about 1117.0840504128.

The spelling of 1393983243 in words is "one billion, three hundred ninety-three million, nine hundred eighty-three thousand, two hundred forty-three".