1339847621 has 48 divisors (see below), whose sum is σ = 1674782208. Its totient is φ = 1066867200.

The previous prime is 1339847609. The next prime is 1339847671. The reversal of 1339847621 is 1267489331.

It is not a de Polignac number, because 1339847621 - 2⁶ = 1339847557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1339847671) by changing a digit.

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, 4768001 + ... + 4768281.

It is an arithmetic number, because the mean of its divisors is an integer number (34891296).

Almost surely, 2^1339847621 is an apocalyptic number.

It is an amenable number.

1339847621 is a deficient number, since it is larger than the sum of its proper divisors (334934587).

1339847621 is a wasteful number, since it uses less digits than its factorization.

1339847621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 435 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 1339847621 is about 36603.9290377413. The cubic root of 1339847621 is about 1102.4319803505.

The spelling of 1339847621 in words is "one billion, three hundred thirty-nine million, eight hundred forty-seven thousand, six hundred twenty-one".