40543785 has 12 divisors (see below), whose sum is σ = 70275972. Its totient is φ = 21623328.

The previous prime is 40543747. The next prime is 40543799. The reversal of 40543785 is 58734504.

40543785 is a `hidden beast` number, since 40 + 543 + 78 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5934096 + 34609689 = 2436^2 + 5883^2 .

It is not a de Polignac number, because 40543785 - 2¹² = 40539689 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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, 450442 + ... + 450531.

It is an arithmetic number, because the mean of its divisors is an integer number (5856331).

Almost surely, 2^40543785 is an apocalyptic number.

40543785 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40543785 is a deficient number, since it is larger than the sum of its proper divisors (29732187).

40543785 is a wasteful number, since it uses less digits than its factorization.

40543785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900984 (or 900981 counting only the distinct ones).

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

The square root of 40543785 is about 6367.4001758960. The cubic root of 40543785 is about 343.5379845233.

It can be divided in two parts, 40543 and 785, that added together give a triangular number (41328 = T₂₈₇).

The spelling of 40543785 in words is "forty million, five hundred forty-three thousand, seven hundred eighty-five".