1315489 has 4 divisors (see below), whose sum is σ = 1503424. Its totient is φ = 1127556.

The previous prime is 1315487. The next prime is 1315493. The reversal of 1315489 is 9845131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9845131 = 269 ⋅36599.

It is a cyclic number.

It is not a de Polignac number, because 1315489 - 2¹ = 1315487 is a prime.

It is a super-2 number, since 2×1315489² = 3461022618242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315489.

It is not an unprimeable number, because it can be changed into a prime (1315481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93957 + ... + 93970.

It is an arithmetic number, because the mean of its divisors is an integer number (375856).

2^1315489 is an apocalyptic number.

It is an amenable number.

1315489 is a deficient number, since it is larger than the sum of its proper divisors (187935).

1315489 is an equidigital number, since it uses as much as digits as its factorization.

1315489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187934.

The product of its digits is 4320, while the sum is 31.

The square root of 1315489 is about 1146.9476884322. The cubic root of 1315489 is about 109.5710290255.

The spelling of 1315489 in words is "one million, three hundred fifteen thousand, four hundred eighty-nine".