1375879 has 2 divisors, whose sum is σ = 1375880. Its totient is φ = 1375878.

The previous prime is 1375877. The next prime is 1375901. The reversal of 1375879 is 9785731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1375879 - 2¹ = 1375877 is a prime.

Together with 1375877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687939 + 687940.

It is an arithmetic number, because the mean of its divisors is an integer number (687940).

2^1375879 is an apocalyptic number.

1375879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375879 is an equidigital number, since it uses as much as digits as its factorization.

1375879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52920, while the sum is 40.

The square root of 1375879 is about 1172.9786869334. The cubic root of 1375879 is about 111.2226949779. Note that the first 3 decimals are identical.

The spelling of 1375879 in words is "one million, three hundred seventy-five thousand, eight hundred seventy-nine".