1379863 has 4 divisors (see below), whose sum is σ = 1382728. Its totient is φ = 1377000.

The previous prime is 1379857. The next prime is 1379867. The reversal of 1379863 is 3689731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1379863 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 (1379867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513 + ... + 1738.

It is an arithmetic number, because the mean of its divisors is an integer number (345682).

2^1379863 is an apocalyptic number.

1379863 is a deficient number, since it is larger than the sum of its proper divisors (2865).

1379863 is an equidigital number, since it uses as much as digits as its factorization.

1379863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864.

The product of its digits is 27216, while the sum is 37.

The square root of 1379863 is about 1174.6756999274. The cubic root of 1379863 is about 111.3299438014.

It can be divided in two parts, 13798 and 63, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 1379863 in words is "one million, three hundred seventy-nine thousand, eight hundred sixty-three".