84341809 has 4 divisors (see below), whose sum is σ = 84508020. Its totient is φ = 84175600.

The previous prime is 84341801. The next prime is 84341849. The reversal of 84341809 is 90814348.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71774784 + 12567025 = 8472^2 + 3545^2 .

It is a cyclic number.

It is not a de Polignac number, because 84341809 - 2³ = 84341801 is a prime.

It is a super-2 number, since 2×84341809² = 14227081490784962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84341801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82342 + ... + 83359.

It is an arithmetic number, because the mean of its divisors is an integer number (21127005).

Almost surely, 2^84341809 is an apocalyptic number.

It is an amenable number.

84341809 is a deficient number, since it is larger than the sum of its proper divisors (166211).

84341809 is a wasteful number, since it uses less digits than its factorization.

84341809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166210.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 84341809 is about 9183.7796685243. The cubic root of 84341809 is about 438.5451414422.

The spelling of 84341809 in words is "eighty-four million, three hundred forty-one thousand, eight hundred nine".