1316409 has 8 divisors (see below), whose sum is σ = 1779552. Its totient is φ = 865440.

The previous prime is 1316407. The next prime is 1316417. The reversal of 1316409 is 9046131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1316409 - 2¹ = 1316407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1316401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2787 + ... + 3224.

It is an arithmetic number, because the mean of its divisors is an integer number (222444).

2^1316409 is an apocalyptic number.

It is an amenable number.

1316409 is a deficient number, since it is larger than the sum of its proper divisors (463143).

1316409 is an equidigital number, since it uses as much as digits as its factorization.

1316409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6087.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1316409 is about 1147.3486828336. The cubic root of 1316409 is about 109.5965662607.

It can be divided in two parts, 1 and 316409, that added together give a triangular number (316410 = T₇₉₅).

The spelling of 1316409 in words is "one million, three hundred sixteen thousand, four hundred nine".