84440488391 has 8 divisors (see below), whose sum is σ = 99831119520. Its totient is φ = 69881783328.

The previous prime is 84440488337. The next prime is 84440488393. The reversal of 84440488391 is 19388404448.

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

It is not a de Polignac number, because 84440488391 - 2³⁴ = 67260619207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84440488393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207981296 + ... + 207981701.

It is an arithmetic number, because the mean of its divisors is an integer number (12478889940).

Almost surely, 2^84440488391 is an apocalyptic number.

84440488391 is a deficient number, since it is larger than the sum of its proper divisors (15390631129).

84440488391 is a wasteful number, since it uses less digits than its factorization.

84440488391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415963033.

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 84440488391 in words is "eighty-four billion, four hundred forty million, four hundred eighty-eight thousand, three hundred ninety-one".