40440800 has 36 divisors (see below), whose sum is σ = 98728056. Its totient is φ = 16176000.

The previous prime is 40440793. The next prime is 40440809. The reversal of 40440800 is 804404.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40440809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24476 + ... + 26075.

It is an arithmetic number, because the mean of its divisors is an integer number (2742446).

Almost surely, 2^40440800 is an apocalyptic number.

40440800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40440800 is an abundant number, since it is smaller than the sum of its proper divisors (58287256).

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

40440800 is a wasteful number, since it uses less digits than its factorization.

40440800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50571 (or 50558 counting only the distinct ones).

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

The square root of 40440800 is about 6359.3081384692. The cubic root of 40440800 is about 343.2468650400.

The spelling of 40440800 in words is "forty million, four hundred forty thousand, eight hundred".