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13444489 = 23718233
BaseRepresentation
bin110011010010…
…010110001001
3221022001101001
4303102112021
511420210424
61200055001
7222163522
oct63222611
927261331
1013444489
117653053
124604461
132a29626
141add849
1512a8844
hexcd2589

13444489 has 8 divisors (see below), whose sum is σ = 14228352. Its totient is φ = 12677280.

The previous prime is 13444477. The next prime is 13444523. The reversal of 13444489 is 98444431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13444489 - 29 = 13443977 is a prime.

It is a super-2 number, since 2×134444892 = 361508568942242, which contains 22 as substring.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (13444469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2484 + ... + 5749.

It is an arithmetic number, because the mean of its divisors is an integer number (1778544).

Almost surely, 213444489 is an apocalyptic number.

It is an amenable number.

13444489 is a deficient number, since it is larger than the sum of its proper divisors (783863).

13444489 is an equidigital number, since it uses as much as digits as its factorization.

13444489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8327.

The product of its digits is 55296, while the sum is 37.

The square root of 13444489 is about 3666.6727424192. The cubic root of 13444489 is about 237.7833456656.

The spelling of 13444489 in words is "thirteen million, four hundred forty-four thousand, four hundred eighty-nine".

Divisors: 1 23 71 1633 8233 189359 584543 13444489