41991906 has 16 divisors (see below), whose sum is σ = 91618848. Its totient is φ = 12724800.

The previous prime is 41991883. The next prime is 41991931. The reversal of 41991906 is 60919914.

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, 318055 + ... + 318186.

It is an arithmetic number, because the mean of its divisors is an integer number (5726178).

Almost surely, 2^41991906 is an apocalyptic number.

41991906 is an abundant number, since it is smaller than the sum of its proper divisors (49626942).

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

41991906 is a wasteful number, since it uses less digits than its factorization.

41991906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636257.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 41991906 is about 6480.1162026618. The cubic root of 41991906 is about 347.5803337210.

It can be divided in two parts, 4199 and 1906, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 41991906 in words is "forty-one million, nine hundred ninety-one thousand, nine hundred six".