4253981 has 6 divisors (see below), whose sum is σ = 4412190. Its totient is φ = 4096568.

The previous prime is 4253969. The next prime is 4254007. The reversal of 4253981 is 1893524.

It can be written as a sum of positive squares in only one way, i.e., 3667225 + 586756 = 1915^2 + 766^2 .

It is not a de Polignac number, because 4253981 - 2⁶ = 4253917 is a prime.

It is a super-2 number, since 2×4253981² = 36192708696722, 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 (4253941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10916 + ... + 11298.

It is an arithmetic number, because the mean of its divisors is an integer number (735365).

Almost surely, 2^4253981 is an apocalyptic number.

It is an amenable number.

4253981 is a deficient number, since it is larger than the sum of its proper divisors (158209).

4253981 is an frugal number, since it uses more digits than its factorization.

4253981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795 (or 412 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 4253981 is about 2062.5181211325. The cubic root of 4253981 is about 162.0311503376.

The spelling of 4253981 in words is "four million, two hundred fifty-three thousand, nine hundred eighty-one".