1392869 has 4 divisors (see below), whose sum is σ = 1406496. Its totient is φ = 1379244.

The previous prime is 1392851. The next prime is 1392877. The reversal of 1392869 is 9682931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9682931 = 23 ⋅420997.

It is a cyclic number.

It is not a de Polignac number, because 1392869 - 2¹² = 1388773 is a prime.

It is a super-2 number, since 2×1392869² = 3880168102322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1392829) 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, 6659 + ... + 6864.

It is an arithmetic number, because the mean of its divisors is an integer number (351624).

2^1392869 is an apocalyptic number.

It is an amenable number.

1392869 is a deficient number, since it is larger than the sum of its proper divisors (13627).

1392869 is a wasteful number, since it uses less digits than its factorization.

1392869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13626.

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

The square root of 1392869 is about 1180.1987120820. The cubic root of 1392869 is about 111.6786334048.

The spelling of 1392869 in words is "one million, three hundred ninety-two thousand, eight hundred sixty-nine".