84772271 has 2 divisors, whose sum is σ = 84772272. Its totient is φ = 84772270.

The previous prime is 84772267. The next prime is 84772279. The reversal of 84772271 is 17227748.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84772271 - 2² = 84772267 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84772279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42386135 + 42386136.

It is an arithmetic number, because the mean of its divisors is an integer number (42386136).

Almost surely, 2^84772271 is an apocalyptic number.

84772271 is a deficient number, since it is larger than the sum of its proper divisors (1).

84772271 is an equidigital number, since it uses as much as digits as its factorization.

84772271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43904, while the sum is 38.

The square root of 84772271 is about 9207.1858349878. The cubic root of 84772271 is about 439.2899549959.

The spelling of 84772271 in words is "eighty-four million, seven hundred seventy-two thousand, two hundred seventy-one".