84464251 has 2 divisors, whose sum is σ = 84464252. Its totient is φ = 84464250.

The previous prime is 84464239. The next prime is 84464299. The reversal of 84464251 is 15246448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84464251 - 2¹⁵ = 84431483 is a prime.

It is equal to p_4914466 and since 84464251 and 4914466 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 (84464201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42232125 + 42232126.

It is an arithmetic number, because the mean of its divisors is an integer number (42232126).

Almost surely, 2^84464251 is an apocalyptic number.

84464251 is a deficient number, since it is larger than the sum of its proper divisors (1).

84464251 is an equidigital number, since it uses as much as digits as its factorization.

84464251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30720, while the sum is 34.

The square root of 84464251 is about 9190.4434604648. The cubic root of 84464251 is about 438.7572560170.

The spelling of 84464251 in words is "eighty-four million, four hundred sixty-four thousand, two hundred fifty-one".