41931978 has 16 divisors (see below), whose sum is σ = 91488096. Its totient is φ = 12706640.

The previous prime is 41931947. The next prime is 41931997. The reversal of 41931978 is 87913914.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317601 + ... + 317732.

It is an arithmetic number, because the mean of its divisors is an integer number (5718006).

Almost surely, 2^41931978 is an apocalyptic number.

41931978 is an abundant number, since it is smaller than the sum of its proper divisors (49556118).

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

41931978 is a wasteful number, since it uses less digits than its factorization.

41931978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635349.

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

The square root of 41931978 is about 6475.4905605676. The cubic root of 41931978 is about 347.4149073088.

The spelling of 41931978 in words is "forty-one million, nine hundred thirty-one thousand, nine hundred seventy-eight".