84798019 has 4 divisors (see below), whose sum is σ = 85150120. Its totient is φ = 84445920.

The previous prime is 84798017. The next prime is 84798031. The reversal of 84798019 is 91089748.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84798019 - 2¹ = 84798017 is a prime.

It is a super-2 number, since 2×84798019² = 14381408052648722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84798019.

It is not an unprimeable number, because it can be changed into a prime (84798017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175689 + ... + 176170.

It is an arithmetic number, because the mean of its divisors is an integer number (21287530).

Almost surely, 2^84798019 is an apocalyptic number.

84798019 is a deficient number, since it is larger than the sum of its proper divisors (352101).

84798019 is a wasteful number, since it uses less digits than its factorization.

84798019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352100.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 84798019 is about 9208.5839845223. The cubic root of 84798019 is about 439.3344258772.

The spelling of 84798019 in words is "eighty-four million, seven hundred ninety-eight thousand, nineteen".