84897931147 has 4 divisors (see below), whose sum is σ = 84904004536. Its totient is φ = 84891857760.

The previous prime is 84897931141. The next prime is 84897931193. The reversal of 84897931147 is 74113979848.

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 84897931147 - 2²³ = 84889542539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84897931141) 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, 3015678 + ... + 3043699.

It is an arithmetic number, because the mean of its divisors is an integer number (21226001134).

Almost surely, 2^84897931147 is an apocalyptic number.

84897931147 is a deficient number, since it is larger than the sum of its proper divisors (6073389).

84897931147 is a wasteful number, since it uses less digits than its factorization.

84897931147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6073388.

The product of its digits is 12192768, while the sum is 61.

The spelling of 84897931147 in words is "eighty-four billion, eight hundred ninety-seven million, nine hundred thirty-one thousand, one hundred forty-seven".