1376839 has 2 divisors, whose sum is σ = 1376840. Its totient is φ = 1376838.

The previous prime is 1376827. The next prime is 1376897. The reversal of 1376839 is 9386731.

It is a weak prime.

It is an emirp because it is prime and its reverse (9386731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1376839 - 2¹⁷ = 1245767 is a prime.

It is a Chen prime.

1376839 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1376798 and 1376807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1376819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688419 + 688420.

It is an arithmetic number, because the mean of its divisors is an integer number (688420).

2^1376839 is an apocalyptic number.

1376839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376839 is an equidigital number, since it uses as much as digits as its factorization.

1376839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 1376839 is about 1173.3878301738. The cubic root of 1376839 is about 111.2485569817.

The spelling of 1376839 in words is "one million, three hundred seventy-six thousand, eight hundred thirty-nine".