84921371 has 2 divisors, whose sum is σ = 84921372. Its totient is φ = 84921370.

The previous prime is 84921329. The next prime is 84921377. The reversal of 84921371 is 17312948.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84921371 is a prime.

It is equal to p_4939415 and since 84921371 and 4939415 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (84921377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42460685 + 42460686.

It is an arithmetic number, because the mean of its divisors is an integer number (42460686).

Almost surely, 2^84921371 is an apocalyptic number.

84921371 is a deficient number, since it is larger than the sum of its proper divisors (1).

84921371 is an equidigital number, since it uses as much as digits as its factorization.

84921371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 84921371 is about 9215.2792144351. The cubic root of 84921371 is about 439.5473495778.

The spelling of 84921371 in words is "eighty-four million, nine hundred twenty-one thousand, three hundred seventy-one".