1078404709 has 2 divisors, whose sum is σ = 1078404710. Its totient is φ = 1078404708.

The previous prime is 1078404661. The next prime is 1078404737. The reversal of 1078404709 is 9074048701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1003495684 + 74909025 = 31678^2 + 8655^2 .

It is a cyclic number.

It is not a de Polignac number, because 1078404709 - 2¹⁵ = 1078371941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1078404799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539202354 + 539202355.

It is an arithmetic number, because the mean of its divisors is an integer number (539202355).

Almost surely, 2^1078404709 is an apocalyptic number.

It is an amenable number.

1078404709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1078404709 is an equidigital number, since it uses as much as digits as its factorization.

1078404709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 1078404709 is about 32839.0729010427. The cubic root of 1078404709 is about 1025.4801506926.

The spelling of 1078404709 in words is "one billion, seventy-eight million, four hundred four thousand, seven hundred nine".