4457981 has 8 divisors (see below), whose sum is σ = 4946400. Its totient is φ = 3983440.

The previous prime is 4457977. The next prime is 4457983. The reversal of 4457981 is 1897544.

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 4457981 - 2² = 4457977 is a prime.

It is a super-2 number, since 2×4457981² = 39747189192722, 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 (4457983) 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 7 ways as a sum of consecutive naturals, for example, 2786 + ... + 4083.

It is an arithmetic number, because the mean of its divisors is an integer number (618300).

Almost surely, 2^4457981 is an apocalyptic number.

It is an amenable number.

4457981 is a deficient number, since it is larger than the sum of its proper divisors (488419).

4457981 is a wasteful number, since it uses less digits than its factorization.

4457981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6939.

The product of its digits is 40320, while the sum is 38.

The square root of 4457981 is about 2111.3931419800. The cubic root of 4457981 is about 164.5808891944.

The spelling of 4457981 in words is "four million, four hundred fifty-seven thousand, nine hundred eighty-one".