1057389 has 4 divisors (see below), whose sum is σ = 1409856. Its totient is φ = 704924.

The previous prime is 1057387. The next prime is 1057391. The reversal of 1057389 is 9837501.

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 an interprime number because it is at equal distance from previous prime (1057387) and next prime (1057391).

It is a cyclic number.

It is not a de Polignac number, because 1057389 - 2¹ = 1057387 is a prime.

It is a super-2 number, since 2×1057389² = 2236142994642, which contains 22 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057387) 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, 176229 + ... + 176234.

It is an arithmetic number, because the mean of its divisors is an integer number (352464).

2^1057389 is an apocalyptic number.

It is an amenable number.

1057389 is a deficient number, since it is larger than the sum of its proper divisors (352467).

1057389 is an equidigital number, since it uses as much as digits as its factorization.

1057389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352466.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 1057389 is about 1028.2942185970. The cubic root of 1057389 is about 101.8774961437.

The spelling of 1057389 in words is "one million, fifty-seven thousand, three hundred eighty-nine".