84648919 has 2 divisors, whose sum is σ = 84648920. Its totient is φ = 84648918.

The previous prime is 84648881. The next prime is 84648923. The reversal of 84648919 is 91984648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84648919 - 2¹⁹ = 84124631 is a prime.

It is a super-2 number, since 2×84648919² = 14330878975737122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84648959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42324459 + 42324460.

It is an arithmetic number, because the mean of its divisors is an integer number (42324460).

Almost surely, 2^84648919 is an apocalyptic number.

84648919 is a deficient number, since it is larger than the sum of its proper divisors (1).

84648919 is an equidigital number, since it uses as much as digits as its factorization.

84648919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 49.

The square root of 84648919 is about 9200.4847154919. The cubic root of 84648919 is about 439.0767815223.

The spelling of 84648919 in words is "eighty-four million, six hundred forty-eight thousand, nine hundred nineteen".