40666477 has 4 divisors (see below), whose sum is σ = 40680640. Its totient is φ = 40652316.

The previous prime is 40666459. The next prime is 40666487. The reversal of 40666477 is 77466604.

40666477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40666477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40666427) 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, 1077 + ... + 9082.

It is an arithmetic number, because the mean of its divisors is an integer number (10170160).

Almost surely, 2^40666477 is an apocalyptic number.

It is an amenable number.

40666477 is a deficient number, since it is larger than the sum of its proper divisors (14163).

40666477 is a wasteful number, since it uses less digits than its factorization.

40666477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14162.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 40666477 is about 6377.0272854991. The cubic root of 40666477 is about 343.8841692454.

The spelling of 40666477 in words is "forty million, six hundred sixty-six thousand, four hundred seventy-seven".