41921979 has 32 divisors (see below), whose sum is σ = 63037440. Its totient is φ = 24564000.

The previous prime is 41921963. The next prime is 41921987. The reversal of 41921979 is 97912914.

It is not a de Polignac number, because 41921979 - 2⁴ = 41921963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41921979.

It is not an unprimeable number, because it can be changed into a prime (41921909) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 234112 + ... + 234290.

It is an arithmetic number, because the mean of its divisors is an integer number (1969920).

Almost surely, 2^41921979 is an apocalyptic number.

41921979 is a deficient number, since it is larger than the sum of its proper divisors (21115461).

41921979 is a wasteful number, since it uses less digits than its factorization.

41921979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its digits is 40824, while the sum is 42.

The square root of 41921979 is about 6474.7184494772. The cubic root of 41921979 is about 347.3872905353.

The spelling of 41921979 in words is "forty-one million, nine hundred twenty-one thousand, nine hundred seventy-nine".