40978244 has 12 divisors (see below), whose sum is σ = 71757504. Its totient is φ = 20476104.

The previous prime is 40978243. The next prime is 40978261. The reversal of 40978244 is 44287904.

It is a junction number, because it is equal to n+sod(n) for n = 40978198 and 40978207.

It is not an unprimeable number, because it can be changed into a prime (40978243) 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 3 ways as a sum of consecutive naturals, for example, 8729 + ... + 12575.

It is an arithmetic number, because the mean of its divisors is an integer number (5979792).

Almost surely, 2^40978244 is an apocalyptic number.

It is an amenable number.

40978244 is a deficient number, since it is larger than the sum of its proper divisors (30779260).

40978244 is a wasteful number, since it uses less digits than its factorization.

40978244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6514 (or 6512 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 40978244 is about 6401.4251538232. The cubic root of 40978244 is about 344.7607218533.

The spelling of 40978244 in words is "forty million, nine hundred seventy-eight thousand, two hundred forty-four".