1378049 has 4 divisors (see below), whose sum is σ = 1394736. Its totient is φ = 1361364.

The previous prime is 1378033. The next prime is 1378057. The reversal of 1378049 is 9408731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9408731 = 29 ⋅324439.

It is a cyclic number.

It is not a de Polignac number, because 1378049 - 2⁴ = 1378033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1378009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8219 + ... + 8384.

It is an arithmetic number, because the mean of its divisors is an integer number (348684).

2^1378049 is an apocalyptic number.

It is an amenable number.

1378049 is a deficient number, since it is larger than the sum of its proper divisors (16687).

1378049 is an equidigital number, since it uses as much as digits as its factorization.

1378049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16686.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1378049 is about 1173.9033179951. The cubic root of 1378049 is about 111.2811367629.

The spelling of 1378049 in words is "one million, three hundred seventy-eight thousand, forty-nine".