84864783 has 4 divisors (see below), whose sum is σ = 113153048. Its totient is φ = 56576520.

The previous prime is 84864781. The next prime is 84864797. The reversal of 84864783 is 38746848.

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

It is not a de Polignac number, because 84864783 - 2¹ = 84864781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84864781) 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, 14144128 + ... + 14144133.

It is an arithmetic number, because the mean of its divisors is an integer number (28288262).

Almost surely, 2^84864783 is an apocalyptic number.

84864783 is a deficient number, since it is larger than the sum of its proper divisors (28288265).

84864783 is a wasteful number, since it uses less digits than its factorization.

84864783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28288264.

The product of its digits is 1032192, while the sum is 48.

The square root of 84864783 is about 9212.2083671615. The cubic root of 84864783 is about 439.4496959798.

The spelling of 84864783 in words is "eighty-four million, eight hundred sixty-four thousand, seven hundred eighty-three".