40640846 has 16 divisors (see below), whose sum is σ = 64742976. Its totient is φ = 19067136.

The previous prime is 40640843. The next prime is 40640857. The reversal of 40640846 is 64804604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40640843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10850 + ... + 14106.

It is an arithmetic number, because the mean of its divisors is an integer number (4046436).

Almost surely, 2^40640846 is an apocalyptic number.

40640846 is a deficient number, since it is larger than the sum of its proper divisors (24102130).

40640846 is a wasteful number, since it uses less digits than its factorization.

40640846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 40640846 is about 6375.0173333098. The cubic root of 40640846 is about 343.8119070431.

The spelling of 40640846 in words is "forty million, six hundred forty thousand, eight hundred forty-six".