84702470947 has 4 divisors (see below), whose sum is σ = 89684969256. Its totient is φ = 79719972640.

The previous prime is 84702470939. The next prime is 84702470987. The reversal of 84702470947 is 74907420748.

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 84702470947 - 2³ = 84702470939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84702470894 and 84702470903.

It is not an unprimeable number, because it can be changed into a prime (84702470987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2491249129 + ... + 2491249162.

It is an arithmetic number, because the mean of its divisors is an integer number (22421242314).

Almost surely, 2^84702470947 is an apocalyptic number.

84702470947 is a deficient number, since it is larger than the sum of its proper divisors (4982498309).

84702470947 is a wasteful number, since it uses less digits than its factorization.

84702470947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982498308.

The product of its (nonzero) digits is 3161088, while the sum is 52.

The spelling of 84702470947 in words is "eighty-four billion, seven hundred two million, four hundred seventy thousand, nine hundred forty-seven".