1393938594 has 12 divisors (see below), whose sum is σ = 3020200326. Its totient is φ = 464646192.

The previous prime is 1393938593. The next prime is 1393938607. The reversal of 1393938594 is 4958393931.

It is a happy number.

1393938594 is a `hidden beast` number, since 1 + 393 + 93 + 85 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 733705569 + 660233025 = 27087^2 + 25695^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1393938594.

It is not an unprimeable number, because it can be changed into a prime (1393938593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38720499 + ... + 38720534.

Almost surely, 2^1393938594 is an apocalyptic number.

1393938594 is an abundant number, since it is smaller than the sum of its proper divisors (1626261732).

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

1393938594 is a wasteful number, since it uses less digits than its factorization.

1393938594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77441041 (or 77441038 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 1393938594 is about 37335.4870599005. The cubic root of 1393938594 is about 1117.0721236271.

The spelling of 1393938594 in words is "one billion, three hundred ninety-three million, nine hundred thirty-eight thousand, five hundred ninety-four".