84821910 has 16 divisors (see below), whose sum is σ = 203572656. Its totient is φ = 22619168.

The previous prime is 84821899. The next prime is 84821911. The reversal of 84821910 is 1912848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84821911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1413669 + ... + 1413728.

It is an arithmetic number, because the mean of its divisors is an integer number (12723291).

Almost surely, 2^84821910 is an apocalyptic number.

84821910 is an abundant number, since it is smaller than the sum of its proper divisors (118750746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84821910 is a wasteful number, since it uses less digits than its factorization.

84821910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2827407.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 84821910 is about 9209.8811067245. The cubic root of 84821910 is about 439.3756813740.

The spelling of 84821910 in words is "eighty-four million, eight hundred twenty-one thousand, nine hundred ten".