1379864 has 16 divisors (see below), whose sum is σ = 2608200. Its totient is φ = 684352.

The previous prime is 1379857. The next prime is 1379867. The reversal of 1379864 is 4689731.

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, 467 + ... + 1725.

2^1379864 is an apocalyptic number.

It is an amenable number.

1379864 is a deficient number, since it is larger than the sum of its proper divisors (1228336).

1379864 is a wasteful number, since it uses less digits than its factorization.

1379864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402 (or 1398 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 1379864 is about 1174.6761255767. The cubic root of 1379864 is about 111.3299706954.

It can be divided in two parts, 137 and 9864, that added together give a palindrome (10001).

The spelling of 1379864 in words is "one million, three hundred seventy-nine thousand, eight hundred sixty-four".