1392169 has 4 divisors (see below), whose sum is σ = 1397844. Its totient is φ = 1386496.

The previous prime is 1392163. The next prime is 1392197. The reversal of 1392169 is 9612931.

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

It can be written as a sum of positive squares in 2 ways, for example, as 810000 + 582169 = 900^2 + 763^2 .

It is a cyclic number.

It is not a de Polignac number, because 1392169 - 2¹¹ = 1390121 is a prime.

It is a super-2 number, since 2×1392169² = 3876269049122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1392169.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2452 + ... + 2965.

It is an arithmetic number, because the mean of its divisors is an integer number (349461).

2^1392169 is an apocalyptic number.

It is an amenable number.

1392169 is a deficient number, since it is larger than the sum of its proper divisors (5675).

1392169 is an equidigital number, since it uses as much as digits as its factorization.

1392169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5674.

The product of its digits is 2916, while the sum is 31.

The square root of 1392169 is about 1179.9021145841. The cubic root of 1392169 is about 111.6599218718.

The spelling of 1392169 in words is "one million, three hundred ninety-two thousand, one hundred sixty-nine".