84630947 has 4 divisors (see below), whose sum is σ = 89609256. Its totient is φ = 79652640.

The previous prime is 84630937. The next prime is 84630977. The reversal of 84630947 is 74903648.

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 84630947 - 2¹² = 84626851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84630907) 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, 2489129 + ... + 2489162.

It is an arithmetic number, because the mean of its divisors is an integer number (22402314).

Almost surely, 2^84630947 is an apocalyptic number.

84630947 is a deficient number, since it is larger than the sum of its proper divisors (4978309).

84630947 is a wasteful number, since it uses less digits than its factorization.

84630947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4978308.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 84630947 is about 9199.5079759735. The cubic root of 84630947 is about 439.0457055341.

The spelling of 84630947 in words is "eighty-four million, six hundred thirty thousand, nine hundred forty-seven".