84404000 has 48 divisors (see below), whose sum is σ = 207390456. Its totient is φ = 33760000.

The previous prime is 84403999. The next prime is 84404003. The reversal of 84404000 is 40448.

It can be written as a sum of positive squares in 4 ways, for example, as 14714896 + 69689104 = 3836^2 + 8348^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (84404003) 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, 6551 + ... + 14550.

Almost surely, 2^84404000 is an apocalyptic number.

84404000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84404000 is an abundant number, since it is smaller than the sum of its proper divisors (122986456).

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

84404000 is a wasteful number, since it uses less digits than its factorization.

84404000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21126 (or 21108 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 84404000 is about 9187.1649598774. The cubic root of 84404000 is about 438.6529047623.

Adding to 84404000 its reverse (40448), we get a palindrome (84444448).

The spelling of 84404000 in words is "eighty-four million, four hundred four thousand".