1047389 has 4 divisors (see below), whose sum is σ = 1197024. Its totient is φ = 897756.

The previous prime is 1047379. The next prime is 1047391. The reversal of 1047389 is 9837401.

1047389 = T₂₀₂ + T₂₀₃ + ... + T₂₄₃.

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: 9837401 = 7 ⋅1405343.

It is a cyclic number.

It is not a de Polignac number, because 1047389 - 2⁴ = 1047373 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047379) 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, 74807 + ... + 74820.

It is an arithmetic number, because the mean of its divisors is an integer number (299256).

2^1047389 is an apocalyptic number.

It is an amenable number.

1047389 is a deficient number, since it is larger than the sum of its proper divisors (149635).

1047389 is an equidigital number, since it uses as much as digits as its factorization.

1047389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149634.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1047389 is about 1023.4202460378. The cubic root of 1047389 is about 101.5553177880. Note that the first 3 decimals are identical.

The spelling of 1047389 in words is "one million, forty-seven thousand, three hundred eighty-nine".