40666353 has 16 divisors (see below), whose sum is σ = 66734976. Its totient is φ = 21450240.

The previous prime is 40666333. The next prime is 40666361. The reversal of 40666353 is 35366604.

It is a happy number.

It is not a de Polignac number, because 40666353 - 2⁹ = 40665841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40666303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74208 + ... + 74753.

It is an arithmetic number, because the mean of its divisors is an integer number (4170936).

Almost surely, 2^40666353 is an apocalyptic number.

It is an amenable number.

40666353 is a deficient number, since it is larger than the sum of its proper divisors (26068623).

40666353 is a wasteful number, since it uses less digits than its factorization.

40666353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148984.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 40666353 is about 6377.0175630933. The cubic root of 40666353 is about 343.8838197218.

The spelling of 40666353 in words is "forty million, six hundred sixty-six thousand, three hundred fifty-three".