1379855 has 16 divisors (see below), whose sum is σ = 1741824. Its totient is φ = 1048320.

The previous prime is 1379821. The next prime is 1379857. The reversal of 1379855 is 5589731.

It is not a de Polignac number, because 1379855 - 2¹⁰ = 1378831 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 (1379857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10802 + ... + 10928.

It is an arithmetic number, because the mean of its divisors is an integer number (108864).

2^1379855 is an apocalyptic number.

1379855 is a deficient number, since it is larger than the sum of its proper divisors (361969).

1379855 is a wasteful number, since it uses less digits than its factorization.

1379855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226.

The product of its digits is 37800, while the sum is 38.

The square root of 1379855 is about 1174.6722947273. The cubic root of 1379855 is about 111.3297286493.

The spelling of 1379855 in words is "one million, three hundred seventy-nine thousand, eight hundred fifty-five".