1055439 has 24 divisors (see below), whose sum is σ = 1901952. Its totient is φ = 547920.

The previous prime is 1055437. The next prime is 1055471. The reversal of 1055439 is 9345501.

1055439 = T₂₆₆ + T₂₆₇ + ... + T₂₉₂.

It is not a de Polignac number, because 1055439 - 2¹ = 1055437 is a prime.

It is a super-2 number, since 2×1055439² = 2227902965442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69 + ... + 1454.

It is an arithmetic number, because the mean of its divisors is an integer number (79248).

2^1055439 is an apocalyptic number.

1055439 is a deficient number, since it is larger than the sum of its proper divisors (846513).

1055439 is a wasteful number, since it uses less digits than its factorization.

1055439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547 (or 1544 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1055439 is about 1027.3456088386. The cubic root of 1055439 is about 101.8148312953.

The spelling of 1055439 in words is "one million, fifty-five thousand, four hundred thirty-nine".