1378879 has 8 divisors (see below), whose sum is σ = 1436400. Its totient is φ = 1322496.

The previous prime is 1378859. The next prime is 1378903. The reversal of 1378879 is 9788731.

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

It is a cyclic number.

It is not a de Polignac number, because 1378879 - 2⁵ = 1378847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378859) 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 7 ways as a sum of consecutive naturals, for example, 2847 + ... + 3295.

It is an arithmetic number, because the mean of its divisors is an integer number (179550).

2^1378879 is an apocalyptic number.

1378879 is a deficient number, since it is larger than the sum of its proper divisors (57521).

1378879 is an equidigital number, since it uses as much as digits as its factorization.

1378879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its digits is 84672, while the sum is 43.

The square root of 1378879 is about 1174.2567862269. The cubic root of 1378879 is about 111.3034738511.

The spelling of 1378879 in words is "one million, three hundred seventy-eight thousand, eight hundred seventy-nine".