84641069 has 2 divisors, whose sum is σ = 84641070. Its totient is φ = 84641068.

The previous prime is 84641059. The next prime is 84641093. The reversal of 84641069 is 96014648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84400969 + 240100 = 9187^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 84641069 - 2²⁴ = 67863853 is a prime.

It is a super-2 number, since 2×84641069² = 14328221122925522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84641009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42320534 + 42320535.

It is an arithmetic number, because the mean of its divisors is an integer number (42320535).

Almost surely, 2^84641069 is an apocalyptic number.

It is an amenable number.

84641069 is a deficient number, since it is larger than the sum of its proper divisors (1).

84641069 is an equidigital number, since it uses as much as digits as its factorization.

84641069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 84641069 is about 9200.0580976426. The cubic root of 84641069 is about 439.0632083650.

The spelling of 84641069 in words is "eighty-four million, six hundred forty-one thousand, sixty-nine".