84693857 has 2 divisors, whose sum is σ = 84693858. Its totient is φ = 84693856.

The previous prime is 84693821. The next prime is 84693863. The reversal of 84693857 is 75839648.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63616576 + 21077281 = 7976^2 + 4591^2 .

It is a cyclic number.

It is not a de Polignac number, because 84693857 - 2¹⁰ = 84692833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84693157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42346928 + 42346929.

It is an arithmetic number, because the mean of its divisors is an integer number (42346929).

Almost surely, 2^84693857 is an apocalyptic number.

It is an amenable number.

84693857 is a deficient number, since it is larger than the sum of its proper divisors (1).

84693857 is an equidigital number, since it uses as much as digits as its factorization.

84693857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 84693857 is about 9202.9265453985. The cubic root of 84693857 is about 439.1544660814.

The spelling of 84693857 in words is "eighty-four million, six hundred ninety-three thousand, eight hundred fifty-seven".