84870947 has 8 divisors (see below), whose sum is σ = 98585952. Its totient is φ = 71553600.

The previous prime is 84870931. The next prime is 84870959. The reversal of 84870947 is 74907848.

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 84870947 - 2⁴ = 84870931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84870917) 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, 98954 + ... + 99807.

It is an arithmetic number, because the mean of its divisors is an integer number (12323244).

Almost surely, 2^84870947 is an apocalyptic number.

84870947 is a deficient number, since it is larger than the sum of its proper divisors (13715005).

84870947 is a wasteful number, since it uses less digits than its factorization.

84870947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198829.

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 84870947 is about 9212.5429171321. The cubic root of 84870947 is about 439.4603352668.

The spelling of 84870947 in words is "eighty-four million, eight hundred seventy thousand, nine hundred forty-seven".