84788047 has 12 divisors (see below), whose sum is σ = 87589656. Its totient is φ = 82069520.

The previous prime is 84788023. The next prime is 84788057. The reversal of 84788047 is 74088748.

It is not a de Polignac number, because 84788047 - 2⁷ = 84787919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84787988 and 84788006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84788017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 289233 + ... + 289525.

It is an arithmetic number, because the mean of its divisors is an integer number (7299138).

Almost surely, 2^84788047 is an apocalyptic number.

84788047 is a deficient number, since it is larger than the sum of its proper divisors (2801609).

84788047 is a wasteful number, since it uses less digits than its factorization.

84788047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 401408, while the sum is 46.

The square root of 84788047 is about 9208.0425172780. The cubic root of 84788047 is about 439.3172037192.

The spelling of 84788047 in words is "eighty-four million, seven hundred eighty-eight thousand, forty-seven".