1386939 has 8 divisors (see below), whose sum is σ = 1857040. Its totient is φ = 920736.

The previous prime is 1386929. The next prime is 1386947. The reversal of 1386939 is 9396831.

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

It is not a de Polignac number, because 1386939 - 2⁷ = 1386811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1386897 and 1386906.

It is not an unprimeable number, because it can be changed into a prime (1386929) 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, 4 + ... + 1665.

It is an arithmetic number, because the mean of its divisors is an integer number (232130).

2^1386939 is an apocalyptic number.

1386939 is a deficient number, since it is larger than the sum of its proper divisors (470101).

1386939 is a wasteful number, since it uses less digits than its factorization.

1386939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949.

The product of its digits is 34992, while the sum is 39.

The square root of 1386939 is about 1177.6837436256. The cubic root of 1386939 is about 111.5199210989.

The spelling of 1386939 in words is "one million, three hundred eighty-six thousand, nine hundred thirty-nine".