1371389 has 2 divisors, whose sum is σ = 1371390. Its totient is φ = 1371388.

The previous prime is 1371353. The next prime is 1371397. The reversal of 1371389 is 9831731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1243225 + 128164 = 1115^2 + 358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1371389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1371089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 685694 + 685695.

It is an arithmetic number, because the mean of its divisors is an integer number (685695).

2^1371389 is an apocalyptic number.

It is an amenable number.

1371389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371389 is an equidigital number, since it uses as much as digits as its factorization.

1371389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 1371389 is about 1171.0631921464. The cubic root of 1371389 is about 111.1015762559.

The spelling of 1371389 in words is "one million, three hundred seventy-one thousand, three hundred eighty-nine".