4281991 has 8 divisors (see below), whose sum is σ = 4908704. Its totient is φ = 3659040.

The previous prime is 4281989. The next prime is 4282001. The reversal of 4281991 is 1991824.

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

It is not a de Polignac number, because 4281991 - 2¹ = 4281989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4281911) 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, 2221 + ... + 3673.

It is an arithmetic number, because the mean of its divisors is an integer number (613588).

Almost surely, 2^4281991 is an apocalyptic number.

4281991 is a deficient number, since it is larger than the sum of its proper divisors (626713).

4281991 is a wasteful number, since it uses less digits than its factorization.

4281991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881.

The product of its digits is 5184, while the sum is 34.

The square root of 4281991 is about 2069.2972236970. The cubic root of 4281991 is about 162.3859997274.

The spelling of 4281991 in words is "four million, two hundred eighty-one thousand, nine hundred ninety-one".