84772791 has 8 divisors (see below), whose sum is σ = 125589360. Its totient is φ = 56515176.

The previous prime is 84772777. The next prime is 84772799. The reversal of 84772791 is 19727748.

It is a happy number.

It is not a de Polignac number, because 84772791 - 2⁹ = 84772279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84772799) 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, 1569840 + ... + 1569893.

It is an arithmetic number, because the mean of its divisors is an integer number (15698670).

Almost surely, 2^84772791 is an apocalyptic number.

84772791 is a deficient number, since it is larger than the sum of its proper divisors (40816569).

84772791 is a wasteful number, since it uses less digits than its factorization.

84772791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3139742 (or 3139736 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 84772791 is about 9207.2140737576. The cubic root of 84772791 is about 439.2908532075.

The spelling of 84772791 in words is "eighty-four million, seven hundred seventy-two thousand, seven hundred ninety-one".