40477878 has 96 divisors (see below), whose sum is σ = 106309632. Its totient is φ = 10886400.

The previous prime is 40477859. The next prime is 40477891. The reversal of 40477878 is 87877404.

40477878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 167838 + ... + 168078.

It is an arithmetic number, because the mean of its divisors is an integer number (1107392).

Almost surely, 2^40477878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40477878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53154816).

40477878 is an abundant number, since it is smaller than the sum of its proper divisors (65831754).

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

40477878 is a wasteful number, since it uses less digits than its factorization.

40477878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 40477878 is about 6362.2227248030. Note that the first 3 decimals coincide. The cubic root of 40477878 is about 343.3517345423.

The spelling of 40477878 in words is "forty million, four hundred seventy-seven thousand, eight hundred seventy-eight".