84041479447397 has 8 divisors (see below), whose sum is σ = 84059105172120. Its totient is φ = 84023854243840.

The previous prime is 84041479447379. The next prime is 84041479447421. The reversal of 84041479447397 is 79374497414048.

It is a Cunningham number, because it is equal to 9167414²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 84041479447396 = 1^2 + 9167414^2 .

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 84041479447397 - 2⁴² = 79643432936293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84041479447397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84041479447997) 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, 650970629 + ... + 651099717.

It is an arithmetic number, because the mean of its divisors is an integer number (10507388146515).

Almost surely, 2^{84041479447397} is an apocalyptic number.

It is an amenable number.

84041479447397 is a deficient number, since it is larger than the sum of its proper divisors (17625724723).

84041479447397 is a wasteful number, since it uses less digits than its factorization.

84041479447397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260583.

The product of its (nonzero) digits is 682795008, while the sum is 71.

The spelling of 84041479447397 in words is "eighty-four trillion, forty-one billion, four hundred seventy-nine million, four hundred forty-seven thousand, three hundred ninety-seven".