84146237447 has 4 divisors (see below), whose sum is σ = 84586793856. Its totient is φ = 83705681040.

The previous prime is 84146237443. The next prime is 84146237471. The reversal of 84146237447 is 74473264148.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84146237447 - 2² = 84146237443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84146237395 and 84146237404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84146237443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220277918 + ... + 220278299.

It is an arithmetic number, because the mean of its divisors is an integer number (21146698464).

Almost surely, 2^84146237447 is an apocalyptic number.

84146237447 is a deficient number, since it is larger than the sum of its proper divisors (440556409).

84146237447 is a wasteful number, since it uses less digits than its factorization.

84146237447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440556408.

The product of its digits is 3612672, while the sum is 50.

The spelling of 84146237447 in words is "eighty-four billion, one hundred forty-six million, two hundred thirty-seven thousand, four hundred forty-seven".