40869878 has 16 divisors (see below), whose sum is σ = 71212704. Its totient is φ = 17228160.

The previous prime is 40869869. The next prime is 40869889. The reversal of 40869878 is 87896804.

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, 23075 + ... + 24782.

It is an arithmetic number, because the mean of its divisors is an integer number (4450794).

Almost surely, 2^40869878 is an apocalyptic number.

40869878 is a deficient number, since it is larger than the sum of its proper divisors (30342826).

40869878 is a wasteful number, since it uses less digits than its factorization.

40869878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47927.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 40869878 is about 6392.9553416241. The cubic root of 40869878 is about 344.4565497037.

The spelling of 40869878 in words is "forty million, eight hundred sixty-nine thousand, eight hundred seventy-eight".