84821927 has 2 divisors, whose sum is σ = 84821928. Its totient is φ = 84821926.

The previous prime is 84821923. The next prime is 84821987. The reversal of 84821927 is 72912848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84821927 - 2² = 84821923 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 (84821923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42410963 + 42410964.

It is an arithmetic number, because the mean of its divisors is an integer number (42410964).

Almost surely, 2^84821927 is an apocalyptic number.

84821927 is a deficient number, since it is larger than the sum of its proper divisors (1).

84821927 is an equidigital number, since it uses as much as digits as its factorization.

84821927 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 41.

The square root of 84821927 is about 9209.8820296462. The cubic root of 84821927 is about 439.3757107272.

The spelling of 84821927 in words is "eighty-four million, eight hundred twenty-one thousand, nine hundred twenty-seven".