1056839 has 16 divisors (see below), whose sum is σ = 1306368. Its totient is φ = 834432.

The previous prime is 1056833. The next prime is 1056863. The reversal of 1056839 is 9386501.

1056839 = T₅₄₆ + T₅₄₇ + ... + T₅₅₂.

It is a cyclic number.

It is not a de Polignac number, because 1056839 - 2⁴ = 1056823 is a prime.

It is a super-2 number, since 2×1056839² = 2233817343842, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9824 + ... + 9930.

It is an arithmetic number, because the mean of its divisors is an integer number (81648).

2^1056839 is an apocalyptic number.

1056839 is a deficient number, since it is larger than the sum of its proper divisors (249529).

1056839 is a wasteful number, since it uses less digits than its factorization.

1056839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1056839 is about 1028.0267506247. The cubic root of 1056839 is about 101.8598292489.

The spelling of 1056839 in words is "one million, fifty-six thousand, eight hundred thirty-nine".