40055660 has 12 divisors (see below), whose sum is σ = 84116928. Its totient is φ = 16022256.

The previous prime is 40055657. The next prime is 40055663. The reversal of 40055660 is 6655004.

40055660 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 (40055657) and next prime (40055663).

It is not an unprimeable number, because it can be changed into a prime (40055663) 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 3 ways as a sum of consecutive naturals, for example, 1001372 + ... + 1001411.

It is an arithmetic number, because the mean of its divisors is an integer number (7009744).

Almost surely, 2^40055660 is an apocalyptic number.

It is an amenable number.

40055660 is an abundant number, since it is smaller than the sum of its proper divisors (44061268).

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

40055660 is a wasteful number, since it uses less digits than its factorization.

40055660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002792 (or 2002790 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 40055660 is about 6328.9541000074. The cubic root of 40055660 is about 342.1537445835.

The spelling of 40055660 in words is "forty million, fifty-five thousand, six hundred sixty".