1140447 has 16 divisors (see below), whose sum is σ = 1896192. Its totient is φ = 592320.

The previous prime is 1140439. The next prime is 1140449. The reversal of 1140447 is 7440411.

It is not a de Polignac number, because 1140447 - 2³ = 1140439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2238 + ... + 2699.

It is an arithmetic number, because the mean of its divisors is an integer number (118512).

2^1140447 is an apocalyptic number.

1140447 is a deficient number, since it is larger than the sum of its proper divisors (755745).

1140447 is a wasteful number, since it uses less digits than its factorization.

1140447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4958.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 1140447 is about 1067.9171316165. The cubic root of 1140447 is about 104.4780445775.

Adding to 1140447 its reverse (7440411), we get a palindrome (8580858).

The spelling of 1140447 in words is "one million, one hundred forty thousand, four hundred forty-seven".