40429878 has 16 divisors (see below), whose sum is σ = 80947200. Its totient is φ = 13462056.

The previous prime is 40429867. The next prime is 40429889. The reversal of 40429878 is 87892404.

40429878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40429867) and next prime (40429889).

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 3423 + ... + 9621.

It is an arithmetic number, because the mean of its divisors is an integer number (5059200).

Almost surely, 2^40429878 is an apocalyptic number.

40429878 is an abundant number, since it is smaller than the sum of its proper divisors (40517322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40429878 is a wasteful number, since it uses less digits than its factorization.

40429878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 40429878 is about 6358.4493392650. The cubic root of 40429878 is about 343.2159615976.

The spelling of 40429878 in words is "forty million, four hundred twenty-nine thousand, eight hundred seventy-eight".