41994981 has 48 divisors (see below), whose sum is σ = 74265984. Its totient is φ = 22321152.

The previous prime is 41994977. The next prime is 41994983. The reversal of 41994981 is 18949914.

It is not a de Polignac number, because 41994981 - 2² = 41994977 is a prime.

It is a super-2 number, since 2×41994981² = 3527156858380722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41994983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 120850 + ... + 121196.

It is an arithmetic number, because the mean of its divisors is an integer number (1547208).

Almost surely, 2^41994981 is an apocalyptic number.

It is an amenable number.

41994981 is a deficient number, since it is larger than the sum of its proper divisors (32271003).

41994981 is a wasteful number, since it uses less digits than its factorization.

41994981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490 (or 487 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 41994981 is about 6480.3534625821. The cubic root of 41994981 is about 347.5888177643.

It can be divided in two parts, 4199 and 4981, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 41994981 in words is "forty-one million, nine hundred ninety-four thousand, nine hundred eighty-one".