40404000 has 384 divisors, whose sum is σ = 167311872. Its totient is φ = 8294400.

The previous prime is 40403999. The next prime is 40404017. The reversal of 40404000 is 40404.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1091982 + ... + 1092018.

It is an arithmetic number, because the mean of its divisors is an integer number (435708).

Almost surely, 2^40404000 is an apocalyptic number.

40404000 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 40404000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83655936).

40404000 is an abundant number, since it is smaller than the sum of its proper divisors (126907872).

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

40404000 is a wasteful number, since it uses less digits than its factorization.

40404000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 40404000 is about 6356.4140834279. The cubic root of 40404000 is about 343.1427184191.

Adding to 40404000 its reverse (40404), we get a palindrome (40444404).

40404000 divided by its reverse (40404) gives a cube (1000 = 10³).

The spelling of 40404000 in words is "forty million, four hundred four thousand".