40553784 has 96 divisors (see below), whose sum is σ = 118984320. Its totient is φ = 12915936.

The previous prime is 40553783. The next prime is 40553831. The reversal of 40553784 is 48735504.

40553784 is a `hidden beast` number, since 40 + 5 + 537 + 84 = 666.

40553784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40553783) 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 23 ways as a sum of consecutive naturals, for example, 44259 + ... + 45165.

It is an arithmetic number, because the mean of its divisors is an integer number (1239420).

Almost surely, 2^40553784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40553784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59492160).

40553784 is an abundant number, since it is smaller than the sum of its proper divisors (78430536).

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

40553784 is a wasteful number, since it uses less digits than its factorization.

40553784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 40553784 is about 6368.1852988116. The cubic root of 40553784 is about 343.5662235737.

The spelling of 40553784 in words is "forty million, five hundred fifty-three thousand, seven hundred eighty-four".