1057869 has 6 divisors (see below), whose sum is σ = 1528046. Its totient is φ = 705240.

The previous prime is 1057853. The next prime is 1057879. The reversal of 1057869 is 9687501.

It can be written as a sum of positive squares in only one way, i.e., 660969 + 396900 = 813^2 + 630^2 .

It is not a de Polignac number, because 1057869 - 2⁴ = 1057853 is a prime.

It is a super-2 number, since 2×1057869² = 2238173642322, which contains 22 as substring.

It is a Duffinian number.

1057869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58762 + ... + 58779.

2^1057869 is an apocalyptic number.

It is an amenable number.

1057869 is a deficient number, since it is larger than the sum of its proper divisors (470177).

1057869 is a wasteful number, since it uses less digits than its factorization.

1057869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117547 (or 117544 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1057869 is about 1028.5275883514. The cubic root of 1057869 is about 101.8929095190.

The spelling of 1057869 in words is "one million, fifty-seven thousand, eight hundred sixty-nine".