1409541409 has 2 divisors, whose sum is σ = 1409541410. Its totient is φ = 1409541408.

The previous prime is 1409541403. The next prime is 1409541473. The reversal of 1409541409 is 9041459041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357701409 + 51840000 = 36847^2 + 7200^2 .

It is an emirp because it is prime and its reverse (9041459041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1409541409 - 2¹¹ = 1409539361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1409541403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704770704 + 704770705.

It is an arithmetic number, because the mean of its divisors is an integer number (704770705).

Almost surely, 2^1409541409 is an apocalyptic number.

It is an amenable number.

1409541409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409541409 is an equidigital number, since it uses as much as digits as its factorization.

1409541409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1409541409 is about 37543.8598042343. The cubic root of 1409541409 is about 1121.2245877065.

The spelling of 1409541409 in words is "one billion, four hundred nine million, five hundred forty-one thousand, four hundred nine".