4913981 has 8 divisors (see below), whose sum is σ = 5062464. Its totient is φ = 4767840.

The previous prime is 4913971. The next prime is 4913999. The reversal of 4913981 is 1893194.

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

It is a cyclic number.

It is not a de Polignac number, because 4913981 - 2⁶ = 4913917 is a prime.

It is a super-2 number, since 2×4913981² = 48294418536722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4913921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4241 + ... + 5273.

It is an arithmetic number, because the mean of its divisors is an integer number (632808).

Almost surely, 2^4913981 is an apocalyptic number.

It is an amenable number.

4913981 is a deficient number, since it is larger than the sum of its proper divisors (148483).

4913981 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (4913980) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1171).

4913981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171.

The product of its digits is 7776, while the sum is 35.

The square root of 4913981 is about 2216.7500986805. The cubic root of 4913981 is about 170.0113141259.

The spelling of 4913981 in words is "four million, nine hundred thirteen thousand, nine hundred eighty-one".