40611993 has 8 divisors (see below), whose sum is σ = 54183168. Its totient is φ = 27057744.

The previous prime is 40611979. The next prime is 40612003. The reversal of 40611993 is 39911604.

40611993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40611993 - 2⁹ = 40611481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40611913) 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 7 ways as a sum of consecutive naturals, for example, 3271 + ... + 9587.

It is an arithmetic number, because the mean of its divisors is an integer number (6772896).

Almost surely, 2^40611993 is an apocalyptic number.

It is an amenable number.

40611993 is a deficient number, since it is larger than the sum of its proper divisors (13571175).

40611993 is a wasteful number, since it uses less digits than its factorization.

40611993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8463.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 40611993 is about 6372.7539572778. The cubic root of 40611993 is about 343.7305246046.

The spelling of 40611993 in words is "forty million, six hundred eleven thousand, nine hundred ninety-three".