1339079805 has 48 divisors (see below), whose sum is σ = 2657251584. Its totient is φ = 611089920.

The previous prime is 1339079789. The next prime is 1339079857. The reversal of 1339079805 is 5089709331.

It is a happy number.

It is not a de Polignac number, because 1339079805 - 2⁴ = 1339079789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195397 + ... + 202133.

It is an arithmetic number, because the mean of its divisors is an integer number (55359408).

Almost surely, 2^1339079805 is an apocalyptic number.

1339079805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1339079805 is a deficient number, since it is larger than the sum of its proper divisors (1318171779).

1339079805 is a wasteful number, since it uses less digits than its factorization.

1339079805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7386 (or 7383 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 1339079805 is about 36593.4393710129. The cubic root of 1339079805 is about 1102.2213527527.

The spelling of 1339079805 in words is "one billion, three hundred thirty-nine million, seventy-nine thousand, eight hundred five".