40084400 has 60 divisors (see below), whose sum is σ = 100512912. Its totient is φ = 15333120.

The previous prime is 40084391. The next prime is 40084439. The reversal of 40084400 is 448004.

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

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, 7022 + ... + 11378.

Almost surely, 2^40084400 is an apocalyptic number.

40084400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40084400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50256456).

40084400 is an abundant number, since it is smaller than the sum of its proper divisors (60428512).

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

40084400 is a wasteful number, since it uses less digits than its factorization.

40084400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4398 (or 4387 counting only the distinct ones).

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

The square root of 40084400 is about 6331.2242102140. The cubic root of 40084400 is about 342.2355569725.

The spelling of 40084400 in words is "forty million, eighty-four thousand, four hundred".