84020719 has 8 divisors (see below), whose sum is σ = 84654720. Its totient is φ = 83389656.

The previous prime is 84020711. The next prime is 84020723. The reversal of 84020719 is 91702048.

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

It is a cyclic number.

It is not a de Polignac number, because 84020719 - 2³ = 84020711 is a prime.

It is a super-2 number, since 2×84020719² = 14118962442553922, 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 (84020711) 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 7 ways as a sum of consecutive naturals, for example, 101184 + ... + 102010.

It is an arithmetic number, because the mean of its divisors is an integer number (10581840).

Almost surely, 2^84020719 is an apocalyptic number.

84020719 is a deficient number, since it is larger than the sum of its proper divisors (634001).

84020719 is a wasteful number, since it uses less digits than its factorization.

84020719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 84020719 is about 9166.2816343379. The cubic root of 84020719 is about 437.9879186704.

The spelling of 84020719 in words is "eighty-four million, twenty thousand, seven hundred nineteen".