1393439330 has 32 divisors (see below), whose sum is σ = 2561292144. Its totient is φ = 545688576.

The previous prime is 1393439321. The next prime is 1393439353. The reversal of 1393439330 is 339343931.

It can be written as a sum of positive squares in 8 ways, for example, as 1170803089 + 222636241 = 34217^2 + 14921^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 93044 + ... + 106976.

Almost surely, 2^1393439330 is an apocalyptic number.

1393439330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1393439330 is a deficient number, since it is larger than the sum of its proper divisors (1167852814).

1393439330 is a wasteful number, since it uses less digits than its factorization.

1393439330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14150.

The product of its (nonzero) digits is 78732, while the sum is 38.

The square root of 1393439330 is about 37328.8002753906. The cubic root of 1393439330 is about 1116.9387412582.

The spelling of 1393439330 in words is "one billion, three hundred ninety-three million, four hundred thirty-nine thousand, three hundred thirty".