1071439 has 2 divisors, whose sum is σ = 1071440. Its totient is φ = 1071438.

The previous prime is 1071419. The next prime is 1071443. The reversal of 1071439 is 9341701.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1071439 - 2⁵ = 1071407 is a prime.

It is a super-2 number, since 2×1071439² = 2295963061442, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535719 + 535720.

It is an arithmetic number, because the mean of its divisors is an integer number (535720).

2^1071439 is an apocalyptic number.

1071439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071439 is an equidigital number, since it uses as much as digits as its factorization.

1071439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1071439 is about 1035.1033764799. The cubic root of 1071439 is about 102.3267428007.

The spelling of 1071439 in words is "one million, seventy-one thousand, four hundred thirty-nine".