84972311 has 2 divisors, whose sum is σ = 84972312. Its totient is φ = 84972310.

The previous prime is 84972263. The next prime is 84972317. The reversal of 84972311 is 11327948.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84972311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84972317) 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, 42486155 + 42486156.

It is an arithmetic number, because the mean of its divisors is an integer number (42486156).

Almost surely, 2^84972311 is an apocalyptic number.

84972311 is a deficient number, since it is larger than the sum of its proper divisors (1).

84972311 is an equidigital number, since it uses as much as digits as its factorization.

84972311 is an odious number, because the sum of its binary digits is odd.

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

The square root of 84972311 is about 9218.0426881199. The cubic root of 84972311 is about 439.6352193575.

The spelling of 84972311 in words is "eighty-four million, nine hundred seventy-two thousand, three hundred eleven".