1379971684 has 96 divisors (see below), whose sum is σ = 3093601280. Its totient is φ = 524040192.

The previous prime is 1379971679. The next prime is 1379971717. The reversal of 1379971684 is 4861799731.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1063324 + ... + 1064620.

Almost surely, 2^1379971684 is an apocalyptic number.

1379971684 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1379971684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1546800640).

1379971684 is an abundant number, since it is smaller than the sum of its proper divisors (1713629596).

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

1379971684 is a wasteful number, since it uses less digits than its factorization.

1379971684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1435 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 55.

The square root of 1379971684 is about 37147.9701195099. The cubic root of 1379971684 is about 1113.3286666790.

The spelling of 1379971684 in words is "one billion, three hundred seventy-nine million, nine hundred seventy-one thousand, six hundred eighty-four".