84405912 has 32 divisors (see below), whose sum is σ = 211904880. Its totient is φ = 28016640.

The previous prime is 84405907. The next prime is 84405913. The reversal of 84405912 is 21950448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84405913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1513 + ... + 13080.

Almost surely, 2^84405912 is an apocalyptic number.

It is an amenable number.

84405912 is an abundant number, since it is smaller than the sum of its proper divisors (127498968).

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

84405912 is a wasteful number, since it uses less digits than its factorization.

84405912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14843 (or 14839 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 84405912 is about 9187.2690175046. The cubic root of 84405912 is about 438.6562169988.

The spelling of 84405912 in words is "eighty-four million, four hundred five thousand, nine hundred twelve".