84392017919 has 8 divisors (see below), whose sum is σ = 93438110208. Its totient is φ = 75574940760.

The previous prime is 84392017901. The next prime is 84392017949. The reversal of 84392017919 is 91971029348.

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-84392017919 is a prime.

It is a super-2 number, since 2×84392017919² (a number of 23 digits) 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 (84392017949) 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, 57253007 + ... + 57254480.

It is an arithmetic number, because the mean of its divisors is an integer number (11679763776).

Almost surely, 2^84392017919 is an apocalyptic number.

84392017919 is a deficient number, since it is larger than the sum of its proper divisors (9046092289).

84392017919 is a wasteful number, since it uses less digits than its factorization.

84392017919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114507565.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 84392017919 in words is "eighty-four billion, three hundred ninety-two million, seventeen thousand, nine hundred nineteen".