40684844 has 6 divisors (see below), whose sum is σ = 71198484. Its totient is φ = 20342420.

The previous prime is 40684843. The next prime is 40684849. The reversal of 40684844 is 44848604.

40684844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40684798 and 40684807.

It is not an unprimeable number, because it can be changed into a prime (40684843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5085602 + ... + 5085609.

It is an arithmetic number, because the mean of its divisors is an integer number (11866414).

Almost surely, 2^40684844 is an apocalyptic number.

It is an amenable number.

40684844 is a deficient number, since it is larger than the sum of its proper divisors (30513640).

40684844 is a wasteful number, since it uses less digits than its factorization.

40684844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10171215 (or 10171213 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 38.

The square root of 40684844 is about 6378.4672139943. The cubic root of 40684844 is about 343.9359331743.

The spelling of 40684844 in words is "forty million, six hundred eighty-four thousand, eight hundred forty-four".