1339312440 has 32 divisors (see below), whose sum is σ = 4017937680. Its totient is φ = 357149952.

The previous prime is 1339312393. The next prime is 1339312453. The reversal of 1339312440 is 442139331.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1339312398 and 1339312407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5580349 + ... + 5580588.

Almost surely, 2^1339312440 is an apocalyptic number.

1339312440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1339312440 is an abundant number, since it is smaller than the sum of its proper divisors (2678625240).

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

1339312440 is a wasteful number, since it uses less digits than its factorization.

1339312440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160951 (or 11160947 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 1339312440 is about 36596.6178765197. The cubic root of 1339312440 is about 1102.2851777804.

The spelling of 1339312440 in words is "one billion, three hundred thirty-nine million, three hundred twelve thousand, four hundred forty".