84439900 has 36 divisors (see below), whose sum is σ = 191206512. Its totient is φ = 32306560.

The previous prime is 84439897. The next prime is 84439937. The reversal of 84439900 is 993448.

It is a self number, because there is not a number n which added to its sum of digits gives 84439900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16057 + ... + 20656.

It is an arithmetic number, because the mean of its divisors is an integer number (5311292).

Almost surely, 2^84439900 is an apocalyptic number.

It is an amenable number.

84439900 is an abundant number, since it is smaller than the sum of its proper divisors (106766612).

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

84439900 is a wasteful number, since it uses less digits than its factorization.

84439900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36750 (or 36743 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 84439900 is about 9189.1185649114. The cubic root of 84439900 is about 438.7150874675.

The spelling of 84439900 in words is "eighty-four million, four hundred thirty-nine thousand, nine hundred".