40646446 has 16 divisors (see below), whose sum is σ = 62637120. Its totient is φ = 19772640.

The previous prime is 40646443. The next prime is 40646447. The reversal of 40646446 is 64464604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40646443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15820 + ... + 18208.

It is an arithmetic number, because the mean of its divisors is an integer number (3914820).

Almost surely, 2^40646446 is an apocalyptic number.

40646446 is a deficient number, since it is larger than the sum of its proper divisors (21990674).

40646446 is a wasteful number, since it uses less digits than its factorization.

40646446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619.

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 40646446 is about 6375.4565326728. The cubic root of 40646446 is about 343.8276978746.

The spelling of 40646446 in words is "forty million, six hundred forty-six thousand, four hundred forty-six".