1359409 has 4 divisors (see below), whose sum is σ = 1363060. Its totient is φ = 1355760.

The previous prime is 1359401. The next prime is 1359427. The reversal of 1359409 is 9049531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 1221025 = 372^2 + 1105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1359409 - 2³ = 1359401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1359401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194 + ... + 2035.

It is an arithmetic number, because the mean of its divisors is an integer number (340765).

2^1359409 is an apocalyptic number.

It is an amenable number.

1359409 is a deficient number, since it is larger than the sum of its proper divisors (3651).

1359409 is an equidigital number, since it uses as much as digits as its factorization.

1359409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3650.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 1359409 is about 1165.9369622754. The cubic root of 1359409 is about 110.7771140940. Note that the first 3 decimals are identical.

The spelling of 1359409 in words is "one million, three hundred fifty-nine thousand, four hundred nine".