1392986 has 32 divisors (see below), whose sum is σ = 2557440. Its totient is φ = 556416.

The previous prime is 1392983. The next prime is 1393003. The reversal of 1392986 is 6892931.

It is a Curzon number.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (1392983) 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, 19046 + ... + 19118.

It is an arithmetic number, because the mean of its divisors is an integer number (79920).

2^1392986 is an apocalyptic number.

1392986 is a deficient number, since it is larger than the sum of its proper divisors (1164454).

1392986 is a wasteful number, since it uses less digits than its factorization.

1392986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158.

The product of its digits is 23328, while the sum is 38.

The square root of 1392986 is about 1180.2482789651. The cubic root of 1392986 is about 111.6817602924.

Subtracting 1392986 from its reverse (6892931), we obtain a palindrome (5499945).

It can be divided in two parts, 139 and 2986, that added together give a 5-th power (3125 = 5⁵).

The spelling of 1392986 in words is "one million, three hundred ninety-two thousand, nine hundred eighty-six".