1051439 has 8 divisors (see below), whose sum is σ = 1088640. Its totient is φ = 1015000.

The previous prime is 1051423. The next prime is 1051459. The reversal of 1051439 is 9341501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1051439 - 2⁴ = 1051423 is a prime.

It is a super-2 number, since 2×1051439² = 2211047941442, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4064 + ... + 4314.

It is an arithmetic number, because the mean of its divisors is an integer number (136080).

2^1051439 is an apocalyptic number.

1051439 is a deficient number, since it is larger than the sum of its proper divisors (37201).

1051439 is an equidigital number, since it uses as much as digits as its factorization.

1051439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1051439 is about 1025.3969962897. The cubic root of 1051439 is about 101.6860460534.

The spelling of 1051439 in words is "one million, fifty-one thousand, four hundred thirty-nine".