1379939 has 8 divisors (see below), whose sum is σ = 1513920. Its totient is φ = 1247400.

The previous prime is 1379929. The next prime is 1379947. The reversal of 1379939 is 9399731.

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

It is not a de Polignac number, because 1379939 - 2⁴ = 1379923 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 1379896 and 1379905.

It is not an unprimeable number, because it can be changed into a prime (1379929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3452 + ... + 3830.

It is an arithmetic number, because the mean of its divisors is an integer number (189240).

2^1379939 is an apocalyptic number.

1379939 is a deficient number, since it is larger than the sum of its proper divisors (133981).

1379939 is a wasteful number, since it uses less digits than its factorization.

1379939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its digits is 45927, while the sum is 41.

The square root of 1379939 is about 1174.7080488360. The cubic root of 1379939 is about 111.3319877049.

The spelling of 1379939 in words is "one million, three hundred seventy-nine thousand, nine hundred thirty-nine".