1384978 has 8 divisors (see below), whose sum is σ = 2374272. Its totient is φ = 593556.

The previous prime is 1384963. The next prime is 1384979. The reversal of 1384978 is 8794831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 1384978.

It is not an unprimeable number, because it can be changed into a prime (1384979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49450 + ... + 49477.

It is an arithmetic number, because the mean of its divisors is an integer number (296784).

2^1384978 is an apocalyptic number.

1384978 is a deficient number, since it is larger than the sum of its proper divisors (989294).

1384978 is an equidigital number, since it uses as much as digits as its factorization.

1384978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98936.

The product of its digits is 48384, while the sum is 40.

The square root of 1384978 is about 1176.8508826525. The cubic root of 1384978 is about 111.4673367830.

The spelling of 1384978 in words is "one million, three hundred eighty-four thousand, nine hundred seventy-eight".