84004398 has 16 divisors (see below), whose sum is σ = 186676560. Its totient is φ = 28001448.

The previous prime is 84004391. The next prime is 84004409. The reversal of 84004398 is 89340048.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84004391) 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, 777765 + ... + 777872.

It is an arithmetic number, because the mean of its divisors is an integer number (11667285).

Almost surely, 2^84004398 is an apocalyptic number.

84004398 is an abundant number, since it is smaller than the sum of its proper divisors (102672162).

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

84004398 is a wasteful number, since it uses less digits than its factorization.

84004398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555648 (or 1555642 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 84004398 is about 9165.3913173416. The cubic root of 84004398 is about 437.9595571590.

The spelling of 84004398 in words is "eighty-four million, four thousand, three hundred ninety-eight".