84811913 has 2 divisors, whose sum is σ = 84811914. Its totient is φ = 84811912.

The previous prime is 84811891. The next prime is 84811933. The reversal of 84811913 is 31911848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84787264 + 24649 = 9208^2 + 157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84811913 is a prime.

It is not a weakly prime, because it can be changed into another prime (84811933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42405956 + 42405957.

It is an arithmetic number, because the mean of its divisors is an integer number (42405957).

Almost surely, 2^84811913 is an apocalyptic number.

It is an amenable number.

84811913 is a deficient number, since it is larger than the sum of its proper divisors (1).

84811913 is an equidigital number, since it uses as much as digits as its factorization.

84811913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 35.

The square root of 84811913 is about 9209.3383584273. The cubic root of 84811913 is about 439.3584192803.

The spelling of 84811913 in words is "eighty-four million, eight hundred eleven thousand, nine hundred thirteen".