1379984 has 10 divisors (see below), whose sum is σ = 2673750. Its totient is φ = 689984.

The previous prime is 1379981. The next prime is 1379993. The reversal of 1379984 is 4899731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1373584 + 6400 = 1172^2 + 80^2 .

It is not an unprimeable number, because it can be changed into a prime (1379981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43109 + ... + 43140.

It is an arithmetic number, because the mean of its divisors is an integer number (267375).

2^1379984 is an apocalyptic number.

It is an amenable number.

1379984 is a deficient number, since it is larger than the sum of its proper divisors (1293766).

1379984 is an equidigital number, since it uses as much as digits as its factorization.

1379984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86257 (or 86251 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 1379984 is about 1174.7272023751. The cubic root of 1379984 is about 111.3331978755. Note that the first 3 decimals are identical.

It can be divided in two parts, 13 and 79984, that added together give a palindrome (79997).

The spelling of 1379984 in words is "one million, three hundred seventy-nine thousand, nine hundred eighty-four".