84049147731 has 4 divisors (see below), whose sum is σ = 112065530312. Its totient is φ = 56032765152.

The previous prime is 84049147691. The next prime is 84049147747. The reversal of 84049147731 is 13774194048.

It is a happy number.

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

It is not a de Polignac number, because 84049147731 - 2⁶ = 84049147667 is a prime.

It is a super-2 number, since 2×84049147731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84049147771) 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 3 ways as a sum of consecutive naturals, for example, 14008191286 + ... + 14008191291.

It is an arithmetic number, because the mean of its divisors is an integer number (28016382578).

Almost surely, 2^84049147731 is an apocalyptic number.

84049147731 is a deficient number, since it is larger than the sum of its proper divisors (28016382581).

84049147731 is a wasteful number, since it uses less digits than its factorization.

84049147731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28016382580.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 84049147731 in words is "eighty-four billion, forty-nine million, one hundred forty-seven thousand, seven hundred thirty-one".