1339878852 has 72 divisors (see below), whose sum is σ = 3736463640. Its totient is φ = 402209280.

The previous prime is 1339878833. The next prime is 1339878857. The reversal of 1339878852 is 2588789331.

It can be written as a sum of positive squares in 4 ways, for example, as 218566656 + 1121312196 = 14784^2 + 33486^2 .

It is not an unprimeable number, because it can be changed into a prime (1339878857) 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 23 ways as a sum of consecutive naturals, for example, 15727 + ... + 54102.

Almost surely, 2^1339878852 is an apocalyptic number.

1339878852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1339878852 is an abundant number, since it is smaller than the sum of its proper divisors (2396584788).

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

1339878852 is a wasteful number, since it uses less digits than its factorization.

1339878852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69893 (or 69888 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 1339878852 is about 36604.3556424642. The cubic root of 1339878852 is about 1102.4405459478.

The spelling of 1339878852 in words is "one billion, three hundred thirty-nine million, eight hundred seventy-eight thousand, eight hundred fifty-two".