1078889 has 4 divisors (see below), whose sum is σ = 1233024. Its totient is φ = 924756.

The previous prime is 1078879. The next prime is 1078919. The reversal of 1078889 is 9888701.

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: 9888701 = 89 ⋅111109.

It is not a de Polignac number, because 1078889 - 2⁴ = 1078873 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77057 + ... + 77070.

It is an arithmetic number, because the mean of its divisors is an integer number (308256).

2^1078889 is an apocalyptic number.

It is an amenable number.

1078889 is a deficient number, since it is larger than the sum of its proper divisors (154135).

1078889 is an equidigital number, since it uses as much as digits as its factorization.

1078889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154134.

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 1078889 is about 1038.6958168781. The cubic root of 1078889 is about 102.5633635582.

The spelling of 1078889 in words is "one million, seventy-eight thousand, eight hundred eighty-nine".