1373389 has 4 divisors (see below), whose sum is σ = 1399356. Its totient is φ = 1347424.

The previous prime is 1373381. The next prime is 1373417. The reversal of 1373389 is 9833731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9833731 = 1069 ⋅9199.

It can be written as a sum of positive squares in 2 ways, for example, as 917764 + 455625 = 958^2 + 675^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373389 - 2³ = 1373381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1373381) 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, 12904 + ... + 13009.

It is an arithmetic number, because the mean of its divisors is an integer number (349839).

2^1373389 is an apocalyptic number.

It is an amenable number.

1373389 is a deficient number, since it is larger than the sum of its proper divisors (25967).

1373389 is an equidigital number, since it uses as much as digits as its factorization.

1373389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25966.

The product of its digits is 13608, while the sum is 34.

The square root of 1373389 is about 1171.9168059210. The cubic root of 1373389 is about 111.1555592909.

The spelling of 1373389 in words is "one million, three hundred seventy-three thousand, three hundred eighty-nine".