4016981 has 4 divisors (see below), whose sum is σ = 4253292. Its totient is φ = 3780672.

The previous prime is 4016963. The next prime is 4016983. The reversal of 4016981 is 1896104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3478225 + 538756 = 1865^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 4016981 - 2⁶ = 4016917 is a prime.

It is a super-2 number, since 2×4016981² = 32272272708722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4016983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118130 + ... + 118163.

It is an arithmetic number, because the mean of its divisors is an integer number (1063323).

Almost surely, 2^4016981 is an apocalyptic number.

It is an amenable number.

4016981 is a deficient number, since it is larger than the sum of its proper divisors (236311).

4016981 is a wasteful number, since it uses less digits than its factorization.

4016981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236310.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 4016981 is about 2004.2407540014. The cubic root of 4016981 is about 158.9644185507.

The spelling of 4016981 in words is "four million, sixteen thousand, nine hundred eighty-one".