1386879876 has 72 divisors (see below), whose sum is σ = 3643075800. Its totient is φ = 444326400.

The previous prime is 1386879869. The next prime is 1386879883. The reversal of 1386879876 is 6789786831.

It is an interprime number because it is at equal distance from previous prime (1386879869) and next prime (1386879883).

It can be written as a sum of positive squares in 4 ways, for example, as 971942976 + 414936900 = 31176^2 + 20370^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236176 + ... + 241976.

It is an arithmetic number, because the mean of its divisors is an integer number (50598275).

Almost surely, 2^1386879876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1386879876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821537900).

1386879876 is an abundant number, since it is smaller than the sum of its proper divisors (2256195924).

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

1386879876 is a wasteful number, since it uses less digits than its factorization.

1386879876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6069 (or 6064 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The square root of 1386879876 is about 37240.8361345446. The cubic root of 1386879876 is about 1115.1833641073.

The spelling of 1386879876 in words is "one billion, three hundred eighty-six million, eight hundred seventy-nine thousand, eight hundred seventy-six".