1384440976 has 20 divisors (see below), whose sum is σ = 2774850300. Its totient is φ = 668350592.

The previous prime is 1384440923. The next prime is 1384440979. The reversal of 1384440976 is 6790444831.

It can be written as a sum of positive squares in 2 ways, for example, as 907455376 + 476985600 = 30124^2 + 21840^2 .

It is not an unprimeable number, because it can be changed into a prime (1384440979) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1491391 + ... + 1492318.

It is an arithmetic number, because the mean of its divisors is an integer number (138742515).

Almost surely, 2^1384440976 is an apocalyptic number.

1384440976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1384440976 is an abundant number, since it is smaller than the sum of its proper divisors (1390409324).

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

1384440976 is a wasteful number, since it uses less digits than its factorization.

1384440976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983746 (or 2983740 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 1384440976 is about 37208.0767576073. The cubic root of 1384440976 is about 1114.5292779993.

The spelling of 1384440976 in words is "one billion, three hundred eighty-four million, four hundred forty thousand, nine hundred seventy-six".