847489619 has 2 divisors, whose sum is σ = 847489620. Its totient is φ = 847489618.

The previous prime is 847489609. The next prime is 847489691. The reversal of 847489619 is 916984748.

Together with next prime (847489691) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 847489619 - 2¹² = 847485523 is a prime.

It is a super-2 number, since 2×847489619² = 1436477308625530322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (847489609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 423744809 + 423744810.

It is an arithmetic number, because the mean of its divisors is an integer number (423744810).

Almost surely, 2^847489619 is an apocalyptic number.

847489619 is a deficient number, since it is larger than the sum of its proper divisors (1).

847489619 is an equidigital number, since it uses as much as digits as its factorization.

847489619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3483648, while the sum is 56.

The square root of 847489619 is about 29111.6749604003. The cubic root of 847489619 is about 946.3347669543.

The spelling of 847489619 in words is "eight hundred forty-seven million, four hundred eighty-nine thousand, six hundred nineteen".