1405039 has 2 divisors, whose sum is σ = 1405040. Its totient is φ = 1405038.

The previous prime is 1405009. The next prime is 1405087. The reversal of 1405039 is 9305041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1405039 - 2⁵ = 1405007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1405009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702519 + 702520.

It is an arithmetic number, because the mean of its divisors is an integer number (702520).

2^1405039 is an apocalyptic number.

1405039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1405039 is an equidigital number, since it uses as much as digits as its factorization.

1405039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1405039 is about 1185.3434101559. The cubic root of 1405039 is about 112.0029495397.

The spelling of 1405039 in words is "one million, four hundred five thousand, thirty-nine".