84955957 has 2 divisors, whose sum is σ = 84955958. Its totient is φ = 84955956.

The previous prime is 84955939. The next prime is 84955963. The reversal of 84955957 is 75955948.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55264356 + 29691601 = 7434^2 + 5449^2 .

It is a cyclic number.

It is not a de Polignac number, because 84955957 - 2¹¹ = 84953909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84955907) 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, 42477978 + 42477979.

It is an arithmetic number, because the mean of its divisors is an integer number (42477979).

Almost surely, 2^84955957 is an apocalyptic number.

It is an amenable number.

84955957 is a deficient number, since it is larger than the sum of its proper divisors (1).

84955957 is an equidigital number, since it uses as much as digits as its factorization.

84955957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268000, while the sum is 52.

The square root of 84955957 is about 9217.1555807635. The cubic root of 84955957 is about 439.6070130881.

Subtracting from 84955957 its reverse (75955948), we obtain a palindrome (9000009).

The spelling of 84955957 in words is "eighty-four million, nine hundred fifty-five thousand, nine hundred fifty-seven".