1375489 has 4 divisors (see below), whose sum is σ = 1398100. Its totient is φ = 1352880.

The previous prime is 1375481. The next prime is 1375513. The reversal of 1375489 is 9845731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9845731 = 7 ⋅1406533.

It can be written as a sum of positive squares in 2 ways, for example, as 748225 + 627264 = 865^2 + 792^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375489 - 2³ = 1375481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11214 + ... + 11335.

It is an arithmetic number, because the mean of its divisors is an integer number (349525).

2^1375489 is an apocalyptic number.

It is an amenable number.

1375489 is a deficient number, since it is larger than the sum of its proper divisors (22611).

1375489 is an equidigital number, since it uses as much as digits as its factorization.

1375489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22610.

The product of its digits is 30240, while the sum is 37.

The square root of 1375489 is about 1172.8124317213. The cubic root of 1375489 is about 111.2121851026.

The spelling of 1375489 in words is "one million, three hundred seventy-five thousand, four hundred eighty-nine".