40664953 has 12 divisors (see below), whose sum is σ = 47410320. Its totient is φ = 34777512.

The previous prime is 40664941. The next prime is 40664977. The reversal of 40664953 is 35946604.

It is a happy number.

It is not a de Polignac number, because 40664953 - 2¹³ = 40656761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40664903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35650 + ... + 36772.

It is an arithmetic number, because the mean of its divisors is an integer number (3950860).

Almost surely, 2^40664953 is an apocalyptic number.

It is an amenable number.

40664953 is a deficient number, since it is larger than the sum of its proper divisors (6745367).

40664953 is a wasteful number, since it uses less digits than its factorization.

40664953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1876 (or 1869 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 40664953 is about 6376.9077929667. The cubic root of 40664953 is about 343.8798734383.

The spelling of 40664953 in words is "forty million, six hundred sixty-four thousand, nine hundred fifty-three".