1040305439 has 2 divisors, whose sum is σ = 1040305440. Its totient is φ = 1040305438.

The previous prime is 1040305421. The next prime is 1040305447. The reversal of 1040305439 is 9345030401.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040305439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040305639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520152719 + 520152720.

It is an arithmetic number, because the mean of its divisors is an integer number (520152720).

Almost surely, 2^1040305439 is an apocalyptic number.

1040305439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040305439 is an equidigital number, since it uses as much as digits as its factorization.

1040305439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1040305439 is about 32253.7662762041. The cubic root of 1040305439 is about 1013.2585794949.

The spelling of 1040305439 in words is "one billion, forty million, three hundred five thousand, four hundred thirty-nine".