1378089 has 12 divisors (see below), whose sum is σ = 2095600. Its totient is φ = 870264.

The previous prime is 1378081. The next prime is 1378099. The reversal of 1378089 is 9808731.

It is not a de Polignac number, because 1378089 - 2³ = 1378081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1378081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3859 + ... + 4200.

2^1378089 is an apocalyptic number.

1378089 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1378089 is a deficient number, since it is larger than the sum of its proper divisors (717511).

1378089 is a wasteful number, since it uses less digits than its factorization.

1378089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084 (or 8081 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1378089 is about 1173.9203550497. The cubic root of 1378089 is about 111.2822134547.

The spelling of 1378089 in words is "one million, three hundred seventy-eight thousand, eighty-nine".