1409064779 has 2 divisors, whose sum is σ = 1409064780. Its totient is φ = 1409064778.

The previous prime is 1409064773. The next prime is 1409064791. The reversal of 1409064779 is 9774609041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1409064779 - 2⁴ = 1409064763 is a prime.

It is not a weakly prime, because it can be changed into another prime (1409064773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704532389 + 704532390.

It is an arithmetic number, because the mean of its divisors is an integer number (704532390).

Almost surely, 2^1409064779 is an apocalyptic number.

1409064779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409064779 is an equidigital number, since it uses as much as digits as its factorization.

1409064779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 1409064779 is about 37537.5116250398. The cubic root of 1409064779 is about 1121.0981944651.

The spelling of 1409064779 in words is "one billion, four hundred nine million, sixty-four thousand, seven hundred seventy-nine".