1144478 has 4 divisors (see below), whose sum is σ = 1716720. Its totient is φ = 572238.

The previous prime is 1144477. The next prime is 1144483. The reversal of 1144478 is 8744411.

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

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1144478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286118 + ... + 286121.

It is an arithmetic number, because the mean of its divisors is an integer number (429180).

2^1144478 is an apocalyptic number.

1144478 is a deficient number, since it is larger than the sum of its proper divisors (572242).

1144478 is an equidigital number, since it uses as much as digits as its factorization.

1144478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572241.

The product of its digits is 3584, while the sum is 29.

The square root of 1144478 is about 1069.8027855638. The cubic root of 1144478 is about 104.6009951318.

Adding to 1144478 its reverse (8744411), we get a palindrome (9888889).

The spelling of 1144478 in words is "one million, one hundred forty-four thousand, four hundred seventy-eight".