84900005 has 4 divisors (see below), whose sum is σ = 101880012. Its totient is φ = 67920000.

The previous prime is 84899981. The next prime is 84900007. The reversal of 84900005 is 50000948.

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 30980356 + 53919649 = 5566^2 + 7343^2 .

It is not a de Polignac number, because 84900005 - 2¹⁰ = 84898981 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84900007) 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, 8489996 + ... + 8490005.

It is an arithmetic number, because the mean of its divisors is an integer number (25470003).

Almost surely, 2^84900005 is an apocalyptic number.

It is an amenable number.

84900005 is a deficient number, since it is larger than the sum of its proper divisors (16980007).

84900005 is a wasteful number, since it uses less digits than its factorization.

84900005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980006.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 84900005 is about 9214.1198711543. The cubic root of 84900005 is about 439.5104834890.

The spelling of 84900005 in words is "eighty-four million, nine hundred thousand, five".