1078239443 has 4 divisors (see below), whose sum is σ = 1104538008. Its totient is φ = 1051940880.

The previous prime is 1078239403. The next prime is 1078239499. The reversal of 1078239443 is 3449328701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1078239443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 26298523 = 1078239443 / (1 + 0 + 7 + 8 + 2 + 3 + 9 + 4 + 4 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1078239443.

It is not an unprimeable number, because it can be changed into a prime (1078239403) 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, 13149221 + ... + 13149302.

It is an arithmetic number, because the mean of its divisors is an integer number (276134502).

Almost surely, 2^1078239443 is an apocalyptic number.

1078239443 is a deficient number, since it is larger than the sum of its proper divisors (26298565).

1078239443 is an equidigital number, since it uses as much as digits as its factorization.

1078239443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26298564.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 1078239443 is about 32836.5565033851. The cubic root of 1078239443 is about 1025.4277629204.

The spelling of 1078239443 in words is "one billion, seventy-eight million, two hundred thirty-nine thousand, four hundred forty-three".