84679271 has 2 divisors, whose sum is σ = 84679272. Its totient is φ = 84679270.

The previous prime is 84679267. The next prime is 84679303. The reversal of 84679271 is 17297648.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84679271 - 2² = 84679267 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84679201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42339635 + 42339636.

It is an arithmetic number, because the mean of its divisors is an integer number (42339636).

Almost surely, 2^84679271 is an apocalyptic number.

84679271 is a deficient number, since it is larger than the sum of its proper divisors (1).

84679271 is an equidigital number, since it uses as much as digits as its factorization.

84679271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 84679271 is about 9202.1340459700. The cubic root of 84679271 is about 439.1292541985.

The spelling of 84679271 in words is "eighty-four million, six hundred seventy-nine thousand, two hundred seventy-one".