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27439019 is a prime number
BaseRepresentation
bin110100010101…
…0111110101011
31220122001020222
41220222332223
524011022034
62420040255
7452141066
oct150527653
956561228
1027439019
1114541383
12923308b
1358b940a
1439038dd
15262012e
hex1a2afab

27439019 has 2 divisors, whose sum is σ = 27439020. Its totient is φ = 27439018.

The previous prime is 27439007. The next prime is 27439039. The reversal of 27439019 is 91093472.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-27439019 is a prime.

It is a super-2 number, since 2×274390192 = 1505799527364722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27439019.

It is not a weakly prime, because it can be changed into another prime (27439039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13719509 + 13719510.

It is an arithmetic number, because the mean of its divisors is an integer number (13719510).

Almost surely, 227439019 is an apocalyptic number.

27439019 is a deficient number, since it is larger than the sum of its proper divisors (1).

27439019 is an equidigital number, since it uses as much as digits as its factorization.

27439019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 27439019 is about 5238.2267037615. The cubic root of 27439019 is about 301.6172621731.

It can be divided in two parts, 274 and 39019, that added together give a palindrome (39293).

The spelling of 27439019 in words is "twenty-seven million, four hundred thirty-nine thousand, nineteen".