40085400 has 48 divisors (see below), whose sum is σ = 124266600. Its totient is φ = 10689280.

The previous prime is 40085399. The next prime is 40085401. The reversal of 40085400 is 458004.

40085400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40085399) and next prime (40085401).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40085401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32805 + ... + 34004.

Almost surely, 2^40085400 is an apocalyptic number.

40085400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40085400 is an abundant number, since it is smaller than the sum of its proper divisors (84181200).

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

40085400 is a wasteful number, since it uses less digits than its factorization.

40085400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66828 (or 66819 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 40085400 is about 6331.3031833897. The cubic root of 40085400 is about 342.2384029068.

The spelling of 40085400 in words is "forty million, eighty-five thousand, four hundred".