1239943364 has 12 divisors (see below), whose sum is σ = 2367164688. Its totient is φ = 563610600.

The previous prime is 1239943333. The next prime is 1239943379. The reversal of 1239943364 is 4633499321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 28180531 = 1239943364 / (1 + 2 + 3 + 9 + 9 + 4 + 3 + 3 + 6 + 4).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14090222 + ... + 14090309.

It is an arithmetic number, because the mean of its divisors is an integer number (197263724).

Almost surely, 2^1239943364 is an apocalyptic number.

It is an amenable number.

1239943364 is a deficient number, since it is larger than the sum of its proper divisors (1127221324).

1239943364 is a wasteful number, since it uses less digits than its factorization.

1239943364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28180546 (or 28180544 counting only the distinct ones).

The product of its digits is 419904, while the sum is 44.

The square root of 1239943364 is about 35212.8295369742. The cubic root of 1239943364 is about 1074.3207142468.

The spelling of 1239943364 in words is "one billion, two hundred thirty-nine million, nine hundred forty-three thousand, three hundred sixty-four".