84801791 has 2 divisors, whose sum is σ = 84801792. Its totient is φ = 84801790.

The previous prime is 84801757. The next prime is 84801793. The reversal of 84801791 is 19710848.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84801791 is a prime.

Together with 84801793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84801793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42400895 + 42400896.

It is an arithmetic number, because the mean of its divisors is an integer number (42400896).

Almost surely, 2^84801791 is an apocalyptic number.

84801791 is a deficient number, since it is larger than the sum of its proper divisors (1).

84801791 is an equidigital number, since it uses as much as digits as its factorization.

84801791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 84801791 is about 9208.7887911495. The cubic root of 84801791 is about 439.3409399637.

The spelling of 84801791 in words is "eighty-four million, eight hundred one thousand, seven hundred ninety-one".