84811900 has 18 divisors (see below), whose sum is σ = 184042040. Its totient is φ = 33924720.

The previous prime is 84811891. The next prime is 84811913. The reversal of 84811900 is 911848.

It is a super-2 number, since 2×84811900² = 14386116763220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 423960 + ... + 424159.

Almost surely, 2^84811900 is an apocalyptic number.

It is an amenable number.

84811900 is an abundant number, since it is smaller than the sum of its proper divisors (99230140).

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

84811900 is a wasteful number, since it uses less digits than its factorization.

84811900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848133 (or 848126 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 84811900 is about 9209.3376526219. The cubic root of 84811900 is about 439.3583968320.

The spelling of 84811900 in words is "eighty-four million, eight hundred eleven thousand, nine hundred".