40649937446 has 16 divisors (see below), whose sum is σ = 63100928880. Its totient is φ = 19624681440.

The previous prime is 40649937431. The next prime is 40649937451. The reversal of 40649937446 is 64473994604.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40649937391 and 40649937400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2086961 + ... + 2106348.

It is an arithmetic number, because the mean of its divisors is an integer number (3943808055).

Almost surely, 2^40649937446 is an apocalyptic number.

40649937446 is a deficient number, since it is larger than the sum of its proper divisors (22450991434).

40649937446 is a wasteful number, since it uses less digits than its factorization.

40649937446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193479.

The product of its (nonzero) digits is 15676416, while the sum is 56.

The spelling of 40649937446 in words is "forty billion, six hundred forty-nine million, nine hundred thirty-seven thousand, four hundred forty-six".