84919613 has 8 divisors (see below), whose sum is σ = 86012088. Its totient is φ = 83833344.

The previous prime is 84919567. The next prime is 84919643. The reversal of 84919613 is 31691948.

It can be written as a sum of positive squares in 4 ways, for example, as 4153444 + 80766169 = 2038^2 + 8987^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-84919613 is a prime.

It is a super-2 number, since 2×84919613² = 14422681344139538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84919643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29945 + ... + 32657.

It is an arithmetic number, because the mean of its divisors is an integer number (10751511).

Almost surely, 2^84919613 is an apocalyptic number.

It is an amenable number.

84919613 is a deficient number, since it is larger than the sum of its proper divisors (1092475).

84919613 is a wasteful number, since it uses less digits than its factorization.

84919613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103.

The product of its digits is 46656, while the sum is 41.

The square root of 84919613 is about 9215.1838288772. The cubic root of 84919613 is about 439.5443164599.

The spelling of 84919613 in words is "eighty-four million, nine hundred nineteen thousand, six hundred thirteen".