84801905 has 4 divisors (see below), whose sum is σ = 101762292. Its totient is φ = 67841520.

The previous prime is 84801901. The next prime is 84801919. The reversal of 84801905 is 50910848.

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 29463184 + 55338721 = 5428^2 + 7439^2 .

It is not a de Polignac number, because 84801905 - 2² = 84801901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84801901) 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, 8480186 + ... + 8480195.

It is an arithmetic number, because the mean of its divisors is an integer number (25440573).

Almost surely, 2^84801905 is an apocalyptic number.

It is an amenable number.

84801905 is a deficient number, since it is larger than the sum of its proper divisors (16960387).

84801905 is a wasteful number, since it uses less digits than its factorization.

84801905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16960386.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 84801905 is about 9208.7949808865. The cubic root of 84801905 is about 439.3411368339.

The spelling of 84801905 in words is "eighty-four million, eight hundred one thousand, nine hundred five".