1140439 has 2 divisors, whose sum is σ = 1140440. Its totient is φ = 1140438.

The previous prime is 1140431. The next prime is 1140449. The reversal of 1140439 is 9340411.

It is a weak prime.

It is an emirp because it is prime and its reverse (9340411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1140439 - 2³ = 1140431 is a prime.

It is a super-2 number, since 2×1140439² = 2601202225442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1140431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570219 + 570220.

It is an arithmetic number, because the mean of its divisors is an integer number (570220).

2^1140439 is an apocalyptic number.

1140439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140439 is an equidigital number, since it uses as much as digits as its factorization.

1140439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1140439 is about 1067.9133860009. The cubic root of 1140439 is about 104.4778002796.

The spelling of 1140439 in words is "one million, one hundred forty thousand, four hundred thirty-nine".