41139978 has 64 divisors (see below), whose sum is σ = 96422400. Its totient is φ = 11568960.

The previous prime is 41139941. The next prime is 41139991. The reversal of 41139978 is 87993114.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66153 + ... + 66771.

It is an arithmetic number, because the mean of its divisors is an integer number (1506600).

Almost surely, 2^41139978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41139978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48211200).

41139978 is an abundant number, since it is smaller than the sum of its proper divisors (55282422).

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

41139978 is a wasteful number, since it uses less digits than its factorization.

41139978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707.

The product of its digits is 54432, while the sum is 42.

The square root of 41139978 is about 6414.0453693437. The cubic root of 41139978 is about 345.2136966342.

The spelling of 41139978 in words is "forty-one million, one hundred thirty-nine thousand, nine hundred seventy-eight".