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1440484223 = 31348353
BaseRepresentation
bin101010111011100…
…0000101101111111
310201101112011212112
41111313000231333
510422230443343
6354534324235
750460625313
oct12567005577
93641464775
101440484223
1167a130132
123424b967b
1319c584839
14d944db43
15866e0218
hex55dc0b7f

1440484223 has 8 divisors (see below), whose sum is σ = 1488529536. Its totient is φ = 1393988160.

The previous prime is 1440484207. The next prime is 1440484363. The reversal of 1440484223 is 3224840441.

It is not a de Polignac number, because 1440484223 - 24 = 1440484207 is a prime.

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 1440484223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440489223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5615 + ... + 53967.

It is an arithmetic number, because the mean of its divisors is an integer number (186066192).

Almost surely, 21440484223 is an apocalyptic number.

1440484223 is a deficient number, since it is larger than the sum of its proper divisors (48045313).

1440484223 is an frugal number, since it uses more digits than its factorization.

1440484223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48446 (or 48384 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 1440484223 is about 37953.7115839808. The cubic root of 1440484223 is about 1129.3697958303.

The spelling of 1440484223 in words is "one billion, four hundred forty million, four hundred eighty-four thousand, two hundred twenty-three".

Divisors: 1 31 961 29791 48353 1498943 46467233 1440484223