4371981 has 8 divisors (see below), whose sum is σ = 5854464. Its totient is φ = 2902080.

The previous prime is 4371977. The next prime is 4371989. The reversal of 4371981 is 1891734.

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

It is not a de Polignac number, because 4371981 - 2² = 4371977 is a prime.

It is a super-2 number, since 2×4371981² = 38228435728722, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4¹¹ + 3¹¹ + 7 + 1 + 9 + 8³ + 1 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4371989) 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, 2301 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (731808).

Almost surely, 2^4371981 is an apocalyptic number.

It is an amenable number.

4371981 is a deficient number, since it is larger than the sum of its proper divisors (1482483).

4371981 is a wasteful number, since it uses less digits than its factorization.

4371981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6291.

The product of its digits is 6048, while the sum is 33.

The square root of 4371981 is about 2090.9282627580. The cubic root of 4371981 is about 163.5156864748.

The spelling of 4371981 in words is "four million, three hundred seventy-one thousand, nine hundred eighty-one".