84141209 has 6 divisors (see below), whose sum is σ = 87143550. Its totient is φ = 81238976.

The previous prime is 84141203. The next prime is 84141217. The reversal of 84141209 is 90214148.

It can be written as a sum of positive squares in 3 ways, for example, as 327184 + 83814025 = 572^2 + 9155^2 .

It is not a de Polignac number, because 84141209 - 2¹² = 84137113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (84141203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49184 + ... + 50865.

It is an arithmetic number, because the mean of its divisors is an integer number (14523925).

Almost surely, 2^84141209 is an apocalyptic number.

It is an amenable number.

84141209 is a deficient number, since it is larger than the sum of its proper divisors (3002341).

84141209 is a wasteful number, since it uses less digits than its factorization.

84141209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100107 (or 100078 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 84141209 is about 9172.8517376005. The cubic root of 84141209 is about 438.1971843474.

It can be divided in two parts, 841 and 41209, that multiplied together give a square (34656769 = 5887²).

The spelling of 84141209 in words is "eighty-four million, one hundred forty-one thousand, two hundred nine".