1040320447 has 4 divisors (see below), whose sum is σ = 1050043176. Its totient is φ = 1030597720.

The previous prime is 1040320439. The next prime is 1040320481. The reversal of 1040320447 is 7440230401.

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

It is a cyclic number.

It is not a de Polignac number, because 1040320447 - 2³ = 1040320439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040320417) 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, 4861204 + ... + 4861417.

It is an arithmetic number, because the mean of its divisors is an integer number (262510794).

Almost surely, 2^1040320447 is an apocalyptic number.

1040320447 is a deficient number, since it is larger than the sum of its proper divisors (9722729).

1040320447 is an equidigital number, since it uses as much as digits as its factorization.

1040320447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9722728.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 1040320447 is about 32253.9989303652. The cubic root of 1040320447 is about 1013.2634520740.

Adding to 1040320447 its reverse (7440230401), we get a palindrome (8480550848).

The spelling of 1040320447 in words is "one billion, forty million, three hundred twenty thousand, four hundred forty-seven".