1374209 has 2 divisors, whose sum is σ = 1374210. Its totient is φ = 1374208.

The previous prime is 1374187. The next prime is 1374211. The reversal of 1374209 is 9024731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1373584 + 625 = 1172^2 + 25^2 .

It is an emirp because it is prime and its reverse (9024731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1374209 - 2¹² = 1370113 is a prime.

Together with 1374211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1374239) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687104 + 687105.

It is an arithmetic number, because the mean of its divisors is an integer number (687105).

It is a Proth number, since it is equal to 671 ⋅ 2¹¹ + 1 and 671 < 2¹¹.

2^1374209 is an apocalyptic number.

It is an amenable number.

1374209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1374209 is an equidigital number, since it uses as much as digits as its factorization.

1374209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1374209 is about 1172.2666079011. The cubic root of 1374209 is about 111.1776771867.

The spelling of 1374209 in words is "one million, three hundred seventy-four thousand, two hundred nine".