1439057 has 4 divisors (see below), whose sum is σ = 1441716. Its totient is φ = 1436400.

The previous prime is 1439047. The next prime is 1439071. The reversal of 1439057 is 7509341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7509341 = 7 ⋅1072763.

It can be written as a sum of positive squares in 2 ways, for example, as 456976 + 982081 = 676^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 1439057 - 2⁶ = 1438993 is a prime.

It is an Ulam number.

It is a pancake number, because a pancake can be divided into 1439057 parts by 1696 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1439017) 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, 194 + ... + 1707.

It is an arithmetic number, because the mean of its divisors is an integer number (360429).

2^1439057 is an apocalyptic number.

It is an amenable number.

1439057 is a deficient number, since it is larger than the sum of its proper divisors (2659).

1439057 is an equidigital number, since it uses as much as digits as its factorization.

1439057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 1439057 is about 1199.6070189858. The cubic root of 1439057 is about 112.8996681670.

The spelling of 1439057 in words is "one million, four hundred thirty-nine thousand, fifty-seven".