84724291 has 2 divisors, whose sum is σ = 84724292. Its totient is φ = 84724290.

The previous prime is 84724279. The next prime is 84724301. The reversal of 84724291 is 19242748.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84724291 - 2¹¹ = 84722243 is a prime.

It is a Chen prime.

It is equal to p_4928653 and since 84724291 and 4928653 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84724291.

It is not a weakly prime, because it can be changed into another prime (84724091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42362145 + 42362146.

It is an arithmetic number, because the mean of its divisors is an integer number (42362146).

Almost surely, 2^84724291 is an apocalyptic number.

84724291 is a deficient number, since it is larger than the sum of its proper divisors (1).

84724291 is an equidigital number, since it uses as much as digits as its factorization.

84724291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 84724291 is about 9204.5798926404. The cubic root of 84724291 is about 439.2070618930.

The spelling of 84724291 in words is "eighty-four million, seven hundred twenty-four thousand, two hundred ninety-one".