1052389 has 4 divisors (see below), whose sum is σ = 1133356. Its totient is φ = 971424.

The previous prime is 1052333. The next prime is 1052413. The reversal of 1052389 is 9832501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9832501 = 7 ⋅1404643.

It can be written as a sum of positive squares in 2 ways, for example, as 187489 + 864900 = 433^2 + 930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1052389 is a prime.

It is a super-2 number, since 2×1052389² = 2215045214642, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

1052389 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1052309) 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, 40464 + ... + 40489.

It is an arithmetic number, because the mean of its divisors is an integer number (283339).

2^1052389 is an apocalyptic number.

It is an amenable number.

1052389 is a deficient number, since it is larger than the sum of its proper divisors (80967).

1052389 is an equidigital number, since it uses as much as digits as its factorization.

1052389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80966.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1052389 is about 1025.8601269179. The cubic root of 1052389 is about 101.7166620835.

It can be divided in two parts, 1052 and 389, that added together give a palindrome (1441).

The spelling of 1052389 in words is "one million, fifty-two thousand, three hundred eighty-nine".