4035981 has 8 divisors (see below), whose sum is σ = 5392000. Its totient is φ = 2685312.

The previous prime is 4035973. The next prime is 4035989. The reversal of 4035981 is 1895304.

It is an interprime number because it is at equal distance from previous prime (4035973) and next prime (4035989).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4035981 - 2³ = 4035973 is a prime.

It is a super-2 number, since 2×4035981² = 32578285264722, 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 (4035989) 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 7 ways as a sum of consecutive naturals, for example, 1020 + ... + 3018.

It is an arithmetic number, because the mean of its divisors is an integer number (674000).

Almost surely, 2^4035981 is an apocalyptic number.

It is an amenable number.

4035981 is a deficient number, since it is larger than the sum of its proper divisors (1356019).

4035981 is a wasteful number, since it uses less digits than its factorization.

4035981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2675.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 4035981 is about 2008.9751118419. The cubic root of 4035981 is about 159.2146541101.

The spelling of 4035981 in words is "four million, thirty-five thousand, nine hundred eighty-one".