1045389 has 4 divisors (see below), whose sum is σ = 1393856. Its totient is φ = 696924.

The previous prime is 1045367. The next prime is 1045391. The reversal of 1045389 is 9835401.

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.

It is not a de Polignac number, because 1045389 - 2⁹ = 1044877 is a prime.

It is a super-2 number, since 2×1045389² = 2185676322642, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045309) 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, 174229 + ... + 174234.

It is an arithmetic number, because the mean of its divisors is an integer number (348464).

2^1045389 is an apocalyptic number.

It is an amenable number.

1045389 is a deficient number, since it is larger than the sum of its proper divisors (348467).

1045389 is an equidigital number, since it uses as much as digits as its factorization.

1045389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348466.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1045389 is about 1022.4426634291. The cubic root of 1045389 is about 101.4906362947.

The spelling of 1045389 in words is "one million, forty-five thousand, three hundred eighty-nine".